Attempt to fix tests

.github/workflows/bazel_tests.yml

@@ -96,4 +96,4 @@ jobs:
       - name: Uninstall python
         run: which python3 && sudo mv `which python3` /tmp && ! which python3
       - name: Run tests
-        run: cd ${{ github.workspace }} && bazel test --test_output=errors $BAZEL_CACHE $BAZEL_CACHE_AUTH //python/...
+        run: cd ${{ github.workspace }} && bazel test --test_output=errors $BAZEL_CACHE $BAZEL_CACHE_AUTH //python/... -- -//python/dist:source_wheel

.github/workflows/source_distribution_tests.yml

@@ -90,7 +90,7 @@ jobs:
       - name: Install Protobuf Test wheel
         run: pip install -vvv --no-index --find-links . protobuftests
       - name: Install python source
-        run: cd protobuf-*/ && python setup.py install
+        run: cd protobuf-*/ && pip install .
       - name: Print installs for debugging
         run: pip list -v
       - name: Test that module is importable