Add update submodules github action

.github/workflows/update-submodules.yml

@@ -0,0 +1,27 @@
+name: Update submodules
+
+on: workflow_dispatch
+
+jobs:
+
+  update-submodules:
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          token: ${{ secrets.PUSH_TOKEN }}
+
+      - name: Update submodules recursively
+        run: |
+          git submodule update --init --recursive
+          git submodule update --recursive --remote
+
+      - name: Commit & push changes
+        run: |
+          git config --global user.name 'github-actions[bot]'
+          git config --global user.email 'github-actions[bot]@users.noreply.github.com'
+          git add --all
+          git commit -m 'Update submodules' || echo 'No changes to commit'
+          git push