dependabot.yml: update to match main configuration

.github/dependabot.yml

@@ -1,53 +1,18 @@
 # This file is synced from the `.github` repository, do not modify it directly.
+---
 version: 2
-
 updates:
-  - package-ecosystem: github-actions
-    directory: /
-    schedule:
-      interval: daily
-    allow:
-      - dependency-type: all
-    # The actions in triage-issues.yml are updated in the Homebrew/.github repo
-    ignore:
-      - dependency-name: actions/stale
-      - dependency-name: dessant/lock-threads
-    groups:
-      artifacts:
-        patterns:
-          - actions/*-artifact
-
-  - package-ecosystem: bundler
-    directory: /
-    schedule:
-      interval: daily
-    allow:
-      - dependency-type: all
-
-  - package-ecosystem: npm
-    directory: /
-    schedule:
-      interval: daily
-    allow:
-      - dependency-type: all
-
-  - package-ecosystem: docker
-    directory: /
-    schedule:
-      interval: daily
-    allow:
-      - dependency-type: all
-
-  - package-ecosystem: devcontainers
-    directory: /
-    schedule:
-      interval: daily
-    allow:
-      - dependency-type: all
+- package-ecosystem: github-actions
+  directory: "/"
+  schedule:
+    interval: daily
+  allow:
+  - dependency-type: all
+  ignore:
+  - dependency-name: actions/stale
+  - dependency-name: dessant/lock-threads
+  groups:
+    artifacts:
+      patterns:
+      - actions/*-artifact
 
-  - package-ecosystem: pip
-    directory: /
-    schedule:
-      interval: daily
-    allow:
-      - dependency-type: all