Exclude ESLint from Dependabot group updates (#320)

To avoid dependency problems of ESLint v9.

.github/dependabot.yml

@@ -11,7 +11,7 @@ updates:
     groups:
       development-dependencies:
         dependency-type: 'development'
-        exclude-patterns: ['stylelint']
+        exclude-patterns: ['stylelint', 'eslint']
     ignore:
       - dependency-name: 'stylelint' # Avoid updating the peer dependency.