chore: Enable dependabot versioning

.github/dependabot.yml

@@ -0,0 +1,19 @@
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "daily"
+groups:
+  medusa:
+    patterns:
+    - "@medusajs*"
+    - "medusa*"
+    update-types:
+    - "minor"
+    - "patch"
+ignore:
+  - dependency-name: "@medusajs*"
+    update-types: ["version-update:semver-major"]
+  - dependency-name: "medusa*"
+    update-types: ["version-update:semver-major"]