add custom configuration for dependabot (#1973)

Signed-off-by: Sebastian Malton <sebastian@malton.name>

.dependabot/config.yml

@@ -0,0 +1,17 @@
+# See https://docs.github.com/en/free-pro-team@latest/github/administering-a-repository/configuration-options-for-dependency-updates
+# for config options
+
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    open-pull-requests-limit: 4
+    reviewers:
+      - "lensapp/lens-maintainers"
+    labels:
+      - "dependencies"
+    versioning-strategy:
+      lockfile-only: false
+      increase: true