pin black version to 22.3.0 (#46)

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
 -   repo: https://github.com/python/black
-    rev: 22.1.0
+    rev: 22.3.0
     hooks:
     -   id: black
         exclude: >

.yamato/pytest-gpu.yml

@@ -13,7 +13,7 @@ pytest_gpu:
       python3 -u -m ml-agents.tests.yamato.setup_venv
       python3 -m pip install --progress-bar=off -r test_requirements.txt --index-url https://artifactory.prd.it.unity3d.com/artifactory/api/pypi/pypi/simple
       python3 -m pip install torch==1.7.1+cu101 torchvision==0.8.2+cu101 torchaudio==0.7.2 -f https://download.pytorch.org/whl/torch_stable.html --index-url https://artifactory.prd.it.unity3d.com/artifactory/api/pypi/pypi/simple
-      python3 -m pytest -m "not slow" -n auto --junitxml=junit/test-results.xml -p no:warnings
+      python3 -m pytest -m "not slow" --junitxml=junit/test-results.xml -p no:warnings
   triggers:
     cancel_old_ci: true
     expression: |