FIX: revert action changes

Note: some changes are conflicting with the current full
documentation upload process (cf
actions/upload-artifact#485)

Extra: removing setoutput as its deprecated by github

.github/workflows/full_documentation.yml

@@ -65,7 +65,7 @@ jobs:
         id: version
         run: |
           testenv\Scripts\Activate.ps1
-          echo "::set-output name=PYAEDT_VERSION::$(python -c "from pyaedt import __version__; print(__version__)")"
+          echo "PYAEDT_VERSION=$(python -c 'from pyaedt import __version__; print(__version__)')" >> $GITHUB_OUTPUT
           echo "PyAEDT version is: $(python -c "from pyaedt import __version__; print(__version__)")"
 
       - name: Create HTML Documentations
@@ -80,7 +80,7 @@ jobs:
 #            .\doc\make.bat pdf
 
       - name: Upload HTML documentation artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
           name: documentation-html
           path: doc/_build/html
@@ -94,7 +94,7 @@ jobs:
           retention-days: 7
 
 #      - name: Upload PDF documentation artifact
-#        uses: actions/upload-artifact@v4
+#        uses: actions/upload-artifact@v3
 #        with:
 #          name: documentation-pdf
 #          path: doc/_build/pdf
@@ -115,7 +115,7 @@ jobs:
     if: github.event_name == 'push' && contains(github.ref, 'refs/tags')
     steps:
       - name: Deploy the stable documentation
-        uses: ansys/actions/doc-deploy-stable@v5
+        uses: ansys/actions/doc-deploy-stable@v4
         with:
           cname: ${{ env.DOCUMENTATION_CNAME }}
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -136,7 +136,7 @@ jobs:
 
       - uses: actions/checkout@v4
 
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v3
 
       - name: Display structure of downloaded files
         run: ls -R
@@ -154,7 +154,7 @@ jobs:
           echo "VERSION_MEILI=$VERSION_MEILI" >> $GITHUB_ENV
 
       - name: "Deploy the stable documentation index for PyAEDT API"
-        uses: ansys/actions/doc-deploy-index@v5
+        uses: ansys/actions/doc-deploy-index@v4
         with:
           cname: ${{ env.DOCUMENTATION_CNAME }}/version/${{ env.VERSION }}
           index-name: pyaedt-v${{ env.VERSION_MEILI }}
@@ -163,7 +163,7 @@ jobs:
           pymeilisearchopts: --stop_urls \"EDBAPI\" # Add EDB API as another index.
 
       - name: "Deploy the stable documentation index for EDB API"
-        uses: ansys/actions/doc-deploy-index@v5
+        uses: ansys/actions/doc-deploy-index@v4
         with:
           cname: ${{ env.DOCUMENTATION_CNAME }}/version/${{ env.VERSION }}/EDBAPI/
           index-name: pyedb-v${{ env.VERSION_MEILI }}