Update Dependabot config (#13939)

* Delete config.yml

* Create dependabot.yml

.dependabot/config.yml

-version: 1
-
-update_configs:
-  - package_manager: "ruby:bundler"
-    directory: "/"
-    update_schedule: "weekly"
-    # Supported update schedule: live daily weekly monthly
-    version_requirement_updates: "auto"
-    # Supported version requirements: auto widen_ranges increase_versions increase_versions_if_necessary
-    allowed_updates:
-      - match:
-          dependency_type: "all"
-          # Supported dependency types: all indirect direct production development
-          update_type: "all"
-          # Supported update types: all security
-
-  - package_manager: "javascript"
-    directory: "/"
-    update_schedule: "weekly"
-    # Supported update schedule: live daily weekly monthly
-    version_requirement_updates: "auto"
-    # Supported version requirements: auto widen_ranges increase_versions increase_versions_if_necessary
-    allowed_updates:
-      - match:
-          dependency_type: "all"
-          # Supported dependency types: all indirect direct production development
-          update_type: "all"
-          # Supported update types: all security

.github/dependabot.yml

+version: 2
+updates:
+
+- package-ecosystem: npm
+  directory: "/"
+  schedule:
+    interval: weekly
+  open-pull-requests-limit: 99
+  allow:
+  - dependency-type: all
+  
+- package-ecosystem: bundler
+  directory: "/"
+  schedule:
+    interval: weekly
+  open-pull-requests-limit: 99
+  allow:
+  - dependency-type: all