fix: configure dependabot to group react deps (#1447)

Author: WilliamBergamin

.github/dependabot.yml

@@ -14,4 +14,8 @@ updates:
     groups:
       docusaurus:
         patterns:
-          - "@docusaurus/*"
+          - "@docusaurus/*"
+      react:
+        patterns:
+          - "react"
+          - "react-dom"