Build(deps): Bump pluggy from 1.5.0 to 1.6.0 in /dependencies/default

Bumps [pluggy](https://github.com/pytest-dev/pluggy) from 1.5.0 to 1.6.0.
- [Changelog](https://github.com/pytest-dev/pluggy/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pluggy@1.5.0...1.6.0)

---
updated-dependencies:
- dependency-name: pluggy
  dependency-version: 1.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

dependencies/default/constraints.txt

@@ -4,7 +4,7 @@ exceptiongroup==1.3.0
 hypothesis==6.131.18
 iniconfig==2.1.0
 packaging==25.0
-pluggy==1.5.0
+pluggy==1.6.0
 pytest==8.3.5
 sortedcontainers==2.4.0
 tomli==2.2.1