pip: bump edk2-pytool-extensions from 0.27.5 to 0.27.6

Bumps [edk2-pytool-extensions](https://github.com/tianocore/edk2-pytool-extensions) from 0.27.5 to 0.27.6.
- [Release notes](https://github.com/tianocore/edk2-pytool-extensions/releases)
- [Commits](tianocore/edk2-pytool-extensions@v0.27.5...v0.27.6)

---
updated-dependencies:
- dependency-name: edk2-pytool-extensions
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pip-requirements.txt

@@ -13,7 +13,7 @@
 ##
 
 edk2-pytool-library==0.21.6
-edk2-pytool-extensions==0.27.5
+edk2-pytool-extensions==0.27.6
 antlr4-python3-runtime==4.13.1
 regex==2024.5.15
 lcov-cobertura==2.0.2