blast_repo fixes (dart-lang/pubspec_parse#125)

dependabot
diff --git a/pkgs/pubspec_parse/.github/dependabot.yml b/pkgs/pubspec_parse/.github/dependabot.yml
index cf1a705..cde02ad 100644
--- a/pkgs/pubspec_parse/.github/dependabot.yml
+++ b/pkgs/pubspec_parse/.github/dependabot.yml
@@ -3,9 +3,13 @@
 version: 2
 
 updates:
-  - package-ecosystem: "github-actions"
-    directory: "/"
+  - package-ecosystem: github-actions
+    directory: /
     schedule:
-      interval: "monthly"
+      interval: monthly
     labels:
-      - "autosubmit"
+      - autosubmit
+    groups:
+      github-actions:
+        patterns:
+          - "*"