Add action to update POT files

.github/workflows/ci-update-pot.yml

@@ -0,0 +1,34 @@
+name: Update POT File
+
+on:
+  push:
+    paths:
+      - aiida-core
+
+
+jobs:
+  update-pot:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Update POT file
+        run: |
+          # Add your commands here to update the POT file
+          # For example, you can use the following command to update the POT file from the aiida-core submodule:
+          # cd aiida-core
+          # git submodule update --init --recursive
+          # make update-pot
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: Update POT file
+          title: Update POT file
+          body: |
+            This pull request updates the POT file from the aiida-core submodule.