Update dependency eslint to v7.30.0

Author: renovate-bot

package-lock.json

@@ -66,7 +66,7 @@
     "css-loader": "5.2.6",
     "cssnano": "5.0.6",
     "eliminate": "1.1.2",
-    "eslint": "7.29.0",
+    "eslint": "7.30.0",
     "eslint-plugin-mdx": "1.13.0",
     "eslint-plugin-react": "7.24.0",
     "gulp": "4.0.2",