fix

Author: radarhere

.github/workflows/test-valgrind-memory.yml

@@ -61,5 +61,5 @@ jobs:
           -e "PYTEST_ADDOPTS=-n0" \
           -v $GITHUB_WORKSPACE:/Pillow \
           pythonpillow/${{ matrix.docker }}:${{ matrix.dockerTag }} \
-          bash -c "pip install pytest-xdist && /Pillow/depends/docker-test-valgrind-memory.sh"
+          bash -c "python3 -m pip install pytest-xdist && /Pillow/depends/docker-test-valgrind-memory.sh"
         sudo chown -R runner $GITHUB_WORKSPACE