upgrade actions

Author: jimustafa

.github/workflows/main.yaml

@@ -14,14 +14,14 @@ jobs:
       matrix:
         python-version: [ '3.7', '3.8', '3.9', '3.10' ]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Cache test fixtures
         id: cache-test-fixtures
         uses: actions/cache@v3
         with:
           path: ${{ github.workspace }}/tests/fixtures/wannier90-*
           key: ${{ runner.os }}-${{ hashFiles('tests/fixtures/*') }}_0
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
@@ -39,8 +39,8 @@ jobs:
   docs:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v3
         with:
           python-version: '3.7'
       - name: Install dependencies