Upgrade to GitHub-native Dependabot (#128)

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

Author: dependabot-preview[bot]

.github/dependabot.yml

@@ -0,0 +1,23 @@
+version: 2
+updates:
+- package-ecosystem: npm
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 2
+  ignore:
+  - dependency-name: "@prisma/cli"
+    versions:
+    - 2.15.0
+    - 2.16.0
+    - 2.16.1
+    - 2.17.0
+    - 2.18.0
+    - 2.19.0
+    - 2.20.0
+  - dependency-name: "@nestjs/schematics"
+    versions:
+    - 7.2.7
+    - 7.2.8
+    - 7.2.9
+    - 7.3.0