update electron to v40, update node versions in workflows (#4018)

- remove param `--enable-features=UseOzonePlatform` in start electron
tests (as we did already in `package.json`)
- update node versions in github workflows, remove `22.21.1`, add `25.x`
- fix formatting in tests
- update dependencies including electron to v40

This is still a draft PR because most calendar electron tests are not
running which is caused by the electron update from `v39.3.0` to
`v40.0.0`. Maybe @KristjanESPERANTO has an idea ...

---------

Co-authored-by: Kristjan ESPERANTO <35647502+KristjanESPERANTO@users.noreply.github.com>

.github/workflows/automated-tests.yaml

@@ -42,7 +42,7 @@ jobs:
     timeout-minutes: 30
     strategy:
       matrix:
-        node-version: [22.21.1, 22.x, 24.x]
+        node-version: [22.x, 24.x, 25.x]
     steps:
       - name: Install electron dependencies and labwc
         run: |

.github/workflows/electron-rebuild.yaml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-slim
     strategy:
       matrix:
-        node-version: [22.21.1, 22.x, 24.x]
+        node-version: [22.x, 24.x, 25.x]
     steps:
       - name: Checkout code
         uses: actions/checkout@v6