Add python310 to the test matrix

Author: wlcx

.github/workflows/python.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: [3.6, 3.7, 3.8, 3.9, "3.10"]
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}

pylsp_black/plugin.py

@@ -139,6 +139,7 @@ def load_config(filename: str) -> Dict:
             black.TargetVersion.PY37,
             black.TargetVersion.PY38,
             black.TargetVersion.PY39,
+            black.TargetVersion.PY310,
         }
     else:
         target_version = set()

pyproject.toml

@@ -1,5 +1,5 @@
 [tool.black]
-target-version = ['py36', 'py37', 'py38', 'py39']
+target-version = ['py36', 'py37', 'py38', 'py39', 'py310']
 exclude = '''
 /(
 	  \.venv

tests/test_plugin.py

@@ -201,6 +201,7 @@ def test_load_config_py36():
         black.TargetVersion.PY37,
         black.TargetVersion.PY38,
         black.TargetVersion.PY39,
+        black.TargetVersion.PY310,
     }