Upgrade to GitHub-native Dependabot

.github/dependabot.yml

@@ -0,0 +1,49 @@
+version: 2
+updates:
+- package-ecosystem: npm
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10
+  ignore:
+  - dependency-name: eslint
+    versions:
+    - 7.20.0
+    - 7.22.0
+    - 7.23.0
+    - 7.24.0
+  - dependency-name: "@typescript-eslint/eslint-plugin"
+    versions:
+    - 4.14.1
+    - 4.14.2
+    - 4.15.1
+    - 4.15.2
+    - 4.17.0
+    - 4.18.0
+    - 4.19.0
+    - 4.20.0
+    - 4.21.0
+  - dependency-name: "@typescript-eslint/parser"
+    versions:
+    - 4.14.1
+    - 4.14.2
+    - 4.15.1
+    - 4.15.2
+    - 4.17.0
+    - 4.18.0
+    - 4.19.0
+    - 4.21.0
+  - dependency-name: "@types/jest"
+    versions:
+    - 26.0.21
+    - 26.0.22
+  - dependency-name: ts-jest
+    versions:
+    - 26.5.0
+    - 26.5.1
+    - 26.5.2
+    - 26.5.4
+  - dependency-name: typescript
+    versions:
+    - 4.1.4
+    - 4.2.2