chore: add dependabot version updating

.github/dependabot.yml

@@ -0,0 +1,19 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+
+version: 2
+updates:
+# Enable version updates for npm
+- package-ecosystem: "npm"
+  # Look for `package.json` and `lock` files in the `root` directory
+  directory: "/"
+  # Check for updates once a week
+  schedule:
+    interval: "weekly"
+# Enable version updates for Docker
+- package-ecosystem: "docker"
+  # Look for a `Dockerfile` in the `root` directory
+  directory: "/"
+  # Check for updates once a week
+  schedule:
+    interval: "weekly"