Bump versions for actions

.github/workflows/build.yml

@@ -41,15 +41,15 @@ jobs:
         # ubuntu-18.04 and ubuntu20.04.
 
       - name: Git clone
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: "${{ matrix.python-version }}"
 
       - name: Pip cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('setup.py') }}
@@ -97,15 +97,15 @@ jobs:
 
     steps:
       - name: Git clone
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set up Python ${{ env.default_python || '3.9' }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: "${{ env.default_python || '3.9' }}"
 
       - name: Pip cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ matrix.toxenv }}-${{ hashFiles('tox.ini', 'setup.py') }}