chore: Update dependabot.yml to allow prod dependencies (mongodb-js#85)

Author: dariakp

.github/dependabot.yml

@@ -29,13 +29,17 @@ updates:
       - dependency-name: "node-gyp"
       - dependency-name: "prebuild"
     versioning-strategy: increase
-    allow:
-      - dependency-type: "development"
 
     groups:
+      prod-dependencies:
+        dependency-type: "production"
+        applies-to: version-updates
+        update-types:
+        - "minor"
+        - "patch"
       development-dependencies:
         dependency-type: "development"
         applies-to: version-updates
         update-types:
         - "minor"
-        - "patch"
+        - "patch"