Update versions of GH actions

Author: blowekamp

.github/workflows/main.yml

@@ -14,12 +14,12 @@ jobs:
   package:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
          fetch-depth: 1
          submodules: true
     - name: Set up Python 3.9
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: 3.9
     - name: Install dependencies
@@ -50,12 +50,12 @@ jobs:
         python-version: ['3.7', '3.10']
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/download-artifact@v2
+    - uses: actions/download-artifact@v3
       id: download
       with:
         name: python-packages
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install tools