Update pluggy requirement from ~=1.6 to ~=1.7

Updates the requirements on [pluggy](https://github.com/pytest-dev/pluggy) to permit the latest version.
- [Changelog](https://github.com/pytest-dev/pluggy/blob/main/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pluggy/compare/1.6.0...1.7.0)

---
updated-dependencies:
- dependency-name: pluggy
  dependency-version: 1.7.0
  dependency-type: direct:production
...

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

requirements.txt

@@ -146,7 +146,7 @@ tzdata
 
 #typing_extensions ==4.8.0
 
-pluggy ~= 1.6
+pluggy ~= 1.7
 
 # LLM intent-based change evaluation (multi-provider via litellm)
 # Uncapped: litellm now uses jsonschema<5.0,>=4.0.0, resolving earlier openapi-spec-validator conflict.