docs: update README to include devEngines.packageManager - #273

Bumps [pnpm/action-setup](https://github.com/pnpm/action-setup) from 5.0.0 to 6.1.0.

## Release notes

Sourced from pnpm/action-setup's releases.

### v6.1.0

### What's Changed
- feat: support pnpm v12 by `@zkochan` in pnpm/action-setup#288

Full Changelog: pnpm/action-setup@v6.0.10...v6.1.0

### v6.0.10

### What's Changed
- docs(README): point users to the successor pnpm/setup action by `@BlackHole1` in pnpm/action-setup#282
- refactor: introduce restore keys for cache by `@SukkaW` in pnpm/action-setup#280
- ci: use pnpm 11 for `pr-check` by `@jamietanna` in pnpm/action-setup#284
- fix: update pnpm to v11.19.0 by `@jamietanna` in pnpm/action-setup#283
- docs: update README to include devEngines.packageManager by `@nemchik` in pnpm/action-setup#273

### New Contributors
- `@jamietanna` made their first contribution in pnpm/action-setup#284
- `@nemchik` made their first contribution in pnpm/action-setup#273

Full Changelog: pnpm/action-setup@v6...v6.0.10

### v6.0.9

### What's Changed
- fix: update pnpm to v11.7.0 by `@zkochan` in pnpm/action-setup#267

Full Changelog: pnpm/action-setup@v6...v6.0.9

### v6.0.8

### What's Changed
- docs(README): fix `cache_dependency_path` type by `@haines` in pnpm/action-setup#257
- fix: drop patchPnpmEnv so standalone+self-update works on Windows by `@zkochan` in pnpm/action-setup#258
- fix: update pnpm to 11.1.1 by `@mungodewar` in pnpm/action-setup#248

### New Contributors
- `@mungodewar` made their first contribution in pnpm/action-setup#248

Full Changelog: pnpm/action-setup@v6.0.7...v6.0.8

### v6.0.7

### What's Changed
- fix: honor devEngines.packageManager.onFail=error (#252) by `@zkochan` in pnpm/action-setup#254
- fix: restore inputs from state in post by `@haines` in pnpm/action-setup#255
- fix: self-update bootstrap to packageManager-pinned version (#233) by `@zkochan` in pnpm/action-setup#256

### New Contributors
- `@haines` made their first contribution in pnpm/action-setup#255

Full Changelog: pnpm/action-setup@v6.0.6...v6.0.7

... (truncated)

## Commits
- `ea17c68` feat: support pnpm v12 (#288)
- `0977fd9` docs: Update README to include devEngines.packageManager (#273)
- `48261ac` fix: update pnpm to v11.19.0 (#283)
- `75677f7` ci: use pnpm 11 for `pr-check` (#284)
- `769ae71` refactor: introduce restore keys for cache (#280)
- `6fed91f` docs(README): point users to the successor pnpm/setup action (#282)
- `0ebf471` fix: update pnpm to v11.7.0 (#267)
- `0e279bb` fix: update pnpm to 11.1.1 (#248)
- `3e83581` fix: drop patchPnpmEnv so standalone+self-update works on Windows (#258)
- `551b42e` docs(README): fix `cache_dependency_path` type (#257)
- Additional commits viewable in compare view

* fix: update pnpm to v11.7.0 (pnpm#267)

* fix: update pnpm to v11.7.0

* fix: update bundle

* docs(README): point users to the successor pnpm/setup action (pnpm#282)

* docs(README): point users to the successor pnpm/setup action

The pnpm setup action has moved to `pnpm/setup`, which installs
pnpm v11+ as a self-contained native executable and can install a
JavaScript runtime (Node.js, Bun, or Deno) in the same step,
replacing `actions/setup-node`.

Add a notice at the top of the README, a migration section with a
before/after workflow example and an input/output mapping table,
and mention the successor in the Notes section. The rest of the
docs stay intact since `pnpm/action-setup` remains the way to
install pnpm v10 and older.

Signed-off-by: Kevin Cui <bh@bugs.cc>

* docs(README): address review feedback on migration section

Add an explicit version: 11 to the migration example and note when the
input can be omitted, since pnpm/setup requires pnpm v11+ and a repo
migrating from version: 10 may have no packageManager field or one that
pins v10.

Move the v2 upgrade warning below the page title so the two callouts
are no longer adjacent blockquotes (markdownlint MD028), keeping the
successor notice and the legacy warning as separate blocks.

Fix the comma splice and use "set up" as the verb in the Notes
section.

Signed-off-by: Kevin Cui <bh@bugs.cc>

---------

Signed-off-by: Kevin Cui <bh@bugs.cc>

* refactor: introduce restore keys for cache (pnpm#280)

* ci: use pnpm 11 for `pr-check` (pnpm#284)

Noticed while working on pnpm#283.

* fix: update pnpm to v11.19.0 (pnpm#283)

* fix: update pnpm to v11.19.0

Via `scripts/update-bootstrap.mjs 11.19.0`

Co-authored-by: Claude Sonnet 5 <jamie.tanna+claude-code@mend.io>

* fixup! fix: update pnpm to v11.19.0

As it needs to be rebuilt on Linux.

---------

Co-authored-by: Claude Sonnet 5 <jamie.tanna+claude-code@mend.io>

* docs: Update README to include devEngines.packageManager (pnpm#273)

Support added in pnpm#211 and pnpm#256

* feat: support pnpm v12 (pnpm#288)

* feat: support pnpm v12

Approve the pinned @pnpm/exe install script for npm 12, add pnpm 12 coverage across supported runner platforms, and clarify that action-setup remains supported alongside pnpm/setup.

* refactor: use pnpm 12 native bootstrap

Install the plain pnpm v12 package as the single native bootstrap, remove the legacy @pnpm/exe lockfile and runtime path, and retain the standalone input as a no-op for workflow compatibility.

* fix: keep bootstrap updates on pnpm 12

Handle npm's array-shaped view output and resolve only pnpm 12 distribution tags.

* fix: use native bootstrap only for pnpm 12

Route pnpm 12-only versions and ranges through the plain pnpm native package while preserving the existing Node and @pnpm/exe bootstrap paths for older releases.

* style: remove updater narrative comments

---------

Signed-off-by: Kevin Cui <bh@bugs.cc>
Co-authored-by: Zoltan Kochan <z@kochan.io>
Co-authored-by: Kevin Cui <github@bugs.cc>
Co-authored-by: Sukka <isukkaw@gmail.com>
Co-authored-by: Jamie Tanna <github@jamietanna.co.uk>
Co-authored-by: Jamie Tanna <jamie@jamietanna.co.uk>
Co-authored-by: Claude Sonnet 5 <jamie.tanna+claude-code@mend.io>
Co-authored-by: Eric Nemchik <eric@nemchik.com>