Upgrade to GitHub-native Dependabot

.github/dependabot.yml

@@ -0,0 +1,33 @@
+version: 2
+updates:
+- package-ecosystem: npm
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "11:00"
+  open-pull-requests-limit: 10
+  ignore:
+  - dependency-name: ajv
+    versions:
+    - 7.0.4
+    - 7.1.0
+    - 7.1.1
+    - 7.2.1
+    - 7.2.3
+    - 7.2.4
+    - 8.0.1
+    - 8.0.2
+    - 8.0.3
+    - 8.0.5
+    - 8.1.0
+  - dependency-name: y18n
+    versions:
+    - 4.0.1
+    - 4.0.2
+  - dependency-name: jest-watch-typeahead
+    versions:
+    - 0.6.2
+  - dependency-name: np
+    versions:
+    - 7.3.0
+    - 7.4.0