Revert "Bump subosito/flutter-action from 2.19.0 to 2.20.0" again (#2655)

Reverts flutter/samples#2642

.github/dependabot.yaml

@@ -5,13 +5,9 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
-    labels:
-      - "autosubmit"
-    # Updating patch versions for "github-actions" is too chatty.
-    # See https://github.com/flutter/flutter/issues/158350.
-    ignore:
-      - dependency-name: "*"
-        update-types: ["version-update:semver-patch"]
+    #  Don't auto-submit github actions updates
+    # labels:
+    #   - "autosubmit"
   - package-ecosystem: "npm"
     directory: "web_embedding/ng-flutter"
     schedule: