use latest versions for actions

Author: kip-hart

.github/workflows/documentation.yaml

@@ -13,9 +13,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@main
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@main
       with:
         python-version: '3.10'
     - name: Setup Linux Environment
@@ -59,7 +59,7 @@ jobs:
         cd -
         
     - name: Upload artifact
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@main
       with:
         name: microstructpy_${{ matrix.doc-type }}_documentation
         path: ${{ env.art_path }}