Add Dependabot configuration

Author: u8array

.github/dependabot.yml

@@ -0,0 +1,28 @@
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+version: 2
+updates:
+  # npm / pnpm dependencies (auto-detected via pnpm-lock.yaml)
+  - package-ecosystem: npm
+    directory: /
+    schedule:
+      interval: weekly
+    open-pull-requests-limit: 10
+    commit-message:
+      prefix: chore
+      include: scope
+    groups:
+      # Bundle non-major updates so we don't get a flood of PRs
+      minor-and-patch:
+        update-types:
+          - minor
+          - patch
+
+  # GitHub Actions used in .github/workflows/
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    open-pull-requests-limit: 5
+    commit-message:
+      prefix: chore
+      include: scope