[Python Distribution] Pin setuptools and wheel to a single version (#36400)

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Closes #36400

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36400 from XuanWang-Amos:python_distribution bd2bd48031
PiperOrigin-RevId: 627114699

tools/release/verify_python_release.py

@@ -44,6 +44,7 @@ _DEFAULT_PACKAGES = [
     "grpcio-testing",
     "grpcio-admin",
     "grpcio-csds",
+    "grpcio-observability",
     "xds-protos",
 ]
 

tools/run_tests/artifacts/build_artifact_python.bat

@@ -19,7 +19,9 @@ set PATH=C:\%1;C:\%1\scripts;%PATH%
 set PATH=C:\msys64\mingw%2\bin;C:\tools\msys64\mingw%2\bin;%PATH%
 :end_mingw64_installation
 
-python -m pip install --upgrade pip six setuptools wheel
+python -m pip install --upgrade pip six
+@rem Ping to a single version to make sure we're building the same artifacts
+python -m pip install setuptools==69.5.1 wheel==0.43.0
 python -m pip install --upgrade "cython<3.0.0rc1"
 python -m pip install -rrequirements.txt --user
 

tools/run_tests/artifacts/build_artifact_python.sh

@@ -26,7 +26,9 @@ export AUDITWHEEL=${AUDITWHEEL:-auditwheel}
 source tools/internal_ci/helper_scripts/prepare_ccache_symlinks_rc
 
 # Needed for building binary distribution wheels -- bdist_wheel
-"${PYTHON}" -m pip install --upgrade pip wheel setuptools
+"${PYTHON}" -m pip install --upgrade pip
+# Ping to a single version to make sure we're building the same artifacts
+"${PYTHON}" -m pip install setuptools==69.5.1 wheel==0.43.0
 
 if [ "$GRPC_SKIP_PIP_CYTHON_UPGRADE" == "" ]
 then