Upgrade to GitHub-native Dependabot

Author: dependabot-preview[bot]

.dependabot/config.yml

@@ -0,0 +1,12 @@
+version: 2
+updates:
+- package-ecosystem: npm
+  directory: "/."
+  schedule:
+    interval: monthly
+  open-pull-requests-limit: 10
+  ignore:
+  - dependency-name: eslint
+    versions:
+    - 7.16.0
+    - 7.19.0