… (#4517) (#4631)

(cherry picked from commit 1fca15a)

Co-authored-by: Burt Matthews <80060660+earfman@users.noreply.github.com>

(cherry picked from commit 1d932cc)

Co-authored-by: nate nowack <thrast36@gmail.com>

(cherry picked from commit b623c23)

(cherry picked from commit 7934124)

Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

…mpress_schema (#4663)

* Don't mutate the caller's schema in compress_schema (#4492)

(cherry picked from commit 6202008)

* Copy schemas iteratively so deep nesting still compresses

(cherry picked from commit 2662e67)

* Keep $defs when the reference scan hits its depth limit

(cherry picked from commit 054a6cf)

---------

Co-authored-by: WinkleMad <winklemad@outlook.com>

* Docs: add v3.4.5 changelog entries

* Condense the 3.4.5 entries to patch-release length