Add dependabot groups config

Author: ohakutsu

.github/dependabot.yml

@@ -30,3 +30,13 @@ updates:
     open-pull-requests-limit: 5
     cooldown:
       default-days: 7
+    groups:
+      react:
+        patterns:
+          - "react"
+          - "react-dom"
+          - "@types/react"
+          - "@types/react-dom"
+      typescript-eslint:
+        patterns:
+          - "@typescript-eslint/*"