ci: add PyQt6 checker workflow job

.github/workflows/continuous_integration.yml

@@ -6,10 +6,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
 
       - name: Install pipenv
         run: pip install pipenv
@@ -18,16 +18,43 @@ jobs:
         run: |
           pipenv install pre_commit
           pipenv run python -m pre_commit run --all-files
+
+  pyqt6-check:
+    name: PyQt6 compatibility check
+    runs-on: ubuntu-latest
+    container:
+      image: registry.gitlab.com/oslandia/qgis/pyqgis-4-checker/pyqgis-qt-checker:latest
+      volumes:
+        - /tmp/.X11-unix:/tmp/.X11-unix
+        - ${{ github.workspace }}:/home/pyqgisdev/
+      options: --user root
+    steps:
+      - name: Get source code
+        uses: actions/checkout@v6
+
+      - name: Check PyQt5 to PyQt6 compatibility
+        run: |
+          pyqt5_to_pyqt6.py --dry_run libqfieldsync/
+          pyqt5_to_pyqt6.py --logfile pyqt6_checker.log libqfieldsync/
+
+      - name: Upload script report if script fails
+        uses: actions/upload-artifact@v6
+        if: ${{ failure() }}
+        with:
+          name: pyqt6-checker-error-report
+          path: pyqt6_checker.log
+          retention-days: 7
+
   test:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         qgis_version: [release-3_22, release-3_28, final-3_36_1]
     env:
       QGIS_TEST_VERSION: ${{ matrix.qgis_version }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: recursive
 
@@ -38,12 +65,12 @@ jobs:
       runs-on: ubuntu-latest
       steps:
         - name: Checkout
-          uses: actions/checkout@v4
+          uses: actions/checkout@v6
           with:
             submodules: recursive
 
         - name: Setup Python
-          uses: actions/setup-python@v5
+          uses: actions/setup-python@v6
 
         - name: Install toolchain
           run: pip install build