chore(dependabot): check monthly

.github/dependabot.yml

@@ -1,28 +1,9 @@
 version: 2
 updates:
-- package-ecosystem: npm
-  directory: "/"
-  schedule:
-    interval: weekly
-    time: "04:00"
-  open-pull-requests-limit: 10
-  target-branch: main
-  ignore:
-  - dependency-name: "@babel/core"
-    versions:
-    - 7.13.8
-  - dependency-name: "@babel/plugin-transform-runtime"
-    versions:
-    - 7.13.8
-  - dependency-name: rollup
-    versions:
-    - 2.40.0
-  - dependency-name: "@babel/runtime"
-    versions:
-    - 7.13.8
-  - dependency-name: "@babel/preset-env"
-    versions:
-    - 7.13.8
-  - dependency-name: classcat
-    versions:
-    - 5.0.1
+  - package-ecosystem: npm
+    directory: '/'
+    schedule:
+      interval: monthly
+      time: '04:00'
+    open-pull-requests-limit: 10
+    target-branch: main