[dependabot]: Bump pulpcore from 3.63.8 to 3.63.9 in /automation

Bumps [pulpcore](https://github.com/pulp/pulpcore) from 3.63.8 to 3.63.9.
- [Release notes](https://github.com/pulp/pulpcore/releases)
- [Changelog](https://github.com/pulp/pulpcore/blob/3.63.9/CHANGES.md)
- [Commits](pulp/pulpcore@3.63.8...3.63.9)

---
updated-dependencies:
- dependency-name: pulpcore
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

automation/requirements.txt

@@ -1,4 +1,4 @@
-pulpcore==3.63.8
+pulpcore==3.63.9
 pulp-container==2.22.1
 pulp-deb==3.5.0
 pulp-rpm==3.27.2