Update documentation.yml

Author: AGrigis

.github/workflows/documentation.yml

@@ -20,11 +20,11 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install Latex
@@ -44,7 +44,7 @@ jobs:
         make raw-html
         cd ../..
     - name: Upload documentation as an artifact
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with: 
         name: html-documentation
         retention-days: 15