pip dev(deps-dev): bump debugpy from 1.8.5 to 1.8.6 in /eng

Bumps [debugpy](https://github.com/microsoft/debugpy) from 1.8.5 to 1.8.6.
- [Release notes](https://github.com/microsoft/debugpy/releases)
- [Commits](microsoft/debugpy@v1.8.5...v1.8.6)

---
updated-dependencies:
- dependency-name: debugpy
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

eng/dev_requirements.txt

@@ -1,6 +1,6 @@
 azure-pylint-guidelines-checker==0.0.8
 colorama==0.4.6
-debugpy==1.8.5
+debugpy==1.8.6
 pytest==8.3.3
 tox==4.18.1
 coverage==7.6.1