Group core react updates (#113)

Author: danbarr

Diff for: .github/dependabot.yaml

@@ -14,6 +14,12 @@ updates:
           - 'globals'
           - 'husky'
           - 'prettier'
+      react:
+        patterns:
+          - 'react'
+          - 'react-dom'
+          - '@types/react'
+          - '@types/react-dom'
     ignore:
       # Pin key docusaurus dependencies to major versions
       - dependency-name: 'react'