[dependabot]: Bump pulpcore from 3.49.14 to 3.49.15 in /automation

Bumps [pulpcore](https://github.com/pulp/pulpcore) from 3.49.14 to 3.49.15.
- [Release notes](https://github.com/pulp/pulpcore/releases)
- [Changelog](https://github.com/pulp/pulpcore/blob/main/CHANGES.md)
- [Commits](pulp/pulpcore@3.49.14...3.49.15)

---
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==3.49.14
+pulpcore==3.49.15
 pulp-container==2.20.2
 pulp-deb==3.2.0
 pulp-rpm==3.26.1