Upgrade to GitHub-native Dependabot (#217)

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

.github/dependabot.yml

@@ -0,0 +1,42 @@
+version: 2
+updates:
+- package-ecosystem: npm
+  directory: "/"
+  schedule:
+    interval: weekly
+    time: "04:00"
+  open-pull-requests-limit: 10
+  ignore:
+  - dependency-name: y18n
+    versions:
+    - 4.0.1
+  - dependency-name: "@types/node"
+    versions:
+    - 14.14.22
+    - 14.14.25
+    - 14.14.28
+    - 14.14.31
+    - 14.14.32
+    - 14.14.34
+    - 14.14.35
+    - 14.14.37
+  - dependency-name: "@types/jest"
+    versions:
+    - 26.0.20
+    - 26.0.21
+  - dependency-name: typescript
+    versions:
+    - 4.1.3
+    - 4.1.5
+    - 4.2.2
+    - 4.2.3
+  - dependency-name: typeorm
+    versions:
+    - 0.2.30
+    - 0.2.31
+  - dependency-name: pg
+    versions:
+    - 8.5.1
+  - dependency-name: lodash
+    versions:
+    - 4.17.20