build(deps): bump msgpack in /lib/galaxy/dependencies

Bumps [msgpack](https://github.com/msgpack/msgpack-python) from 1.1.2 to 1.2.1.
- [Release notes](https://github.com/msgpack/msgpack-python/releases)
- [Changelog](https://github.com/msgpack/msgpack-python/blob/main/CHANGELOG.md)
- [Commits](https://github.com/msgpack/msgpack-python/compare/v1.1.2...v1.2.1)

---
updated-dependencies:
- dependency-name: msgpack
  dependency-version: 1.2.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

lib/galaxy/dependencies/dev-requirements.txt

@@ -100,7 +100,7 @@ mdurl==0.1.2
 mirakuru==3.0.2
 mistune==3.2.1
 more-itertools==11.1.0 ; platform_machine != 'ppc64le' and platform_machine != 's390x'
-msgpack==1.1.2
+msgpack==1.2.1
 multidict==6.7.1
 mypy==2.1.0
 mypy-extensions==1.1.0

lib/galaxy/dependencies/pinned-requirements.txt

@@ -159,7 +159,7 @@ mistune==3.2.1
 more-itertools==11.1.0
 mrcfile==1.5.4
 msal==1.37.0
-msgpack==1.1.2
+msgpack==1.2.1
 multidict==6.7.1
 mypy-extensions==1.1.0
 networkx==3.4.2 ; python_full_version < '3.11'

lib/galaxy/dependencies/pinned-test-requirements.txt

@@ -78,7 +78,7 @@ matplotlib==3.10.9
 mdurl==0.1.2
 mirakuru==3.0.2
 mistune==3.2.1
-msgpack==1.1.2
+msgpack==1.2.1
 multidict==6.7.1
 mypy==2.1.0
 mypy-extensions==1.1.0