build(deps): bump PyYAML from 6.0 to 6.0.2

PyYAML 6.0's sdist setup.py references `cython_sources` on `build_ext`,
which no longer exists in Cython 3 / setuptools 70+. This breaks the
Automatic Dependency Submission (Python) workflow on every PR — the
`pip-compile` step dies with `AttributeError: 'build_ext' object has no
attribute 'cython_sources'` while resolving from sdist (no PyYAML 6.0
wheels exist for Python 3.12).

6.0.2 ships prebuilt Python 3.12 wheels and patches the sdist setup.py.
Patch-level bump within the 6.0 line — zero API change.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: vedharish

requirements.txt

@@ -71,7 +71,7 @@ python3-openid==3.2.0
 pytz==2021.3
 pyvim==3.0.2
 pyvmomi==7.0.1
-PyYAML==6.0
+PyYAML==6.0.2
 requests==2.32.3
 requests-oauthlib==1.3.0
 rsa==4.7