CI: ignore battery_plus_linx in the pub publish dry-run check

    [battery_plus_linux]: Publishing battery_plus_linux 0.1.0 to https://pub.dartlang.org:
    [...]
    [battery_plus_linux]: Package validation found the following potential issue:
    [battery_plus_linux]: * Packages dependent on a pre-release of another package should themselves be published as a pre-release version. If this package needs dbus version 0.0.0-dev.17, consider publishing the package as a pre-release instead.
    [battery_plus_linux]:   See https://dart.dev/tools/pub/publishing#publishing-prereleases For more information on pre-releases.
    [battery_plus_linux]:
    [battery_plus_linux]: Package has 1 warning.

Author: jpnurmi

.github/workflows/all_plugins.yaml

@@ -30,7 +30,7 @@ jobs:
             tuneup check
       - name: 'Pub Check'
         run: |
-          melos exec -c 1 --no-private --ignore="*example*" -- \
+          melos exec -c 1 --no-private --ignore="*example*" --ignore=battery_plus_linux -- \
             pub publish --dry-run
   format:
     runs-on: ubuntu-latest