chore: add groups to dependabot

Author: yordis

.github/dependabot.yml

@@ -1,14 +1,19 @@
 version: 2
 updates:
   - package-ecosystem: github-actions
-    directory: '/'
+    directory: "/"
     schedule:
       interval: monthly
 
   - package-ecosystem: mix
-    directory: '/'
+    directory: "/"
     schedule:
       interval: monthly
+    groups:
+      prod:
+        dependency-type: production
+      dev:
+        dependency-type: development
     ignore:
-      - dependency-name: 'ibrowse'
-        versions: ['4.4.1']
+      - dependency-name: "ibrowse"
+        versions: ["4.4.1"]