[AI-FSSDK] [FSSDK-13375] prepare for release csharp-sdk v4.6.0 (#424)

* [FSSDK-13375] update CHANGELOG for csharp v4.6.0

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* [FSSDK-13375] bump version to 4.6.0

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* [FSSDK-13375] update CHANGELOG release date

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-authored-by: Md Junaed Hossain <169046794+junaed-optimizely@users.noreply.github.com>

[AI-FSSDK] [FSSDK-13070] prepare for release csharp v4.5.0 (#421)

[FSSDK-12875] release (#419)

[FSSDK-12875] trusted publishing (#418)

release csharp-sdk v4.3.0 (#406)

[FSSDK-11956] CMAB Release C# (#396)

[FSSDK-10848] Prepare release 4.1.0 (#376)

* chore: bump semver 1 minor release

* doc: update for new minor release

[FSSDK-8581] chore: Prepare for 4.0.0 release (#371)

* chore: Update AssemblyInformationalVersion

removed beta tag for NuGet

* docs: Update changelog

* docs: Test whether I have to manually link PRs

* docs: Add PR links

wwwhyy is this still something I have to do??? *coughs: AI*

* docs: Update version listed on README

This file needs to be reviewed & updates

* docs: Update version listed on README

This file needs to be reviewed & updates

* docs: Update CHANGELOG with 4.0-GA info

bring pre-release beta notes up to the GA version section

* docs: Update LICENSE copyright line

* docs: Reorder CHANGELOG entries

[FSSDK-9538] chore Cherry-pick & prep for 3.11.4 release (#364)

* [FSSDK-9538] bug: Fix last modified formatting (#361)

* Fix non-RFC1123 formatting

* Update tests to ensure expected format

* Add more accurate assert

* Lint fixes

(cherry picked from commit 962bd68)

* Update CI to run for release branch

* Update (fix) assembly versions

I can't believe I missed the main project fully 😫

* Update CHANGELOG.md

[FSSDK-9486] chore: Prepare for releasing 3.11.3 (#358)

* Update assembly semantic version

* Update CHANGELOG.md

* Update the date

* Downgrade to non-ODP FSC version for e2e GH Actions tests

* Try using hash of integration_test.yml

* Set REPO_SLUG (hopefully run pre-ODP suite)