fix github actions

.github/workflows/build.yml

@@ -8,19 +8,15 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, macOS-latest]
+        os: [ubuntu-latest, macOS-latest]
 
     steps:
       - uses: actions/checkout@v2
-
       - uses: actions/setup-python@v2
-
       - name: Install cibuildwheel
         run: python -m pip install cibuildwheel~=1.9.0
-
       - name: Build wheels
         run: python -m cibuildwheel --output-dir wheelhouse
-
       - uses: actions/upload-artifact@v2
         with:
           path: ./wheelhouse/*.whl

.github/workflows/test.yml

@@ -4,6 +4,7 @@ on: [push, pull_request]
 
 jobs:
   black:
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - name: Black Check