fix(deps): update dependency gatsby-plugin-netlify to v5

Author: renovate-bot

package-lock.json

@@ -17,7 +17,7 @@
     "gatsby-plugin-google-gtag": "4.6.0",
     "gatsby-plugin-image": "2.6.0",
     "gatsby-plugin-manifest": "4.6.0",
-    "gatsby-plugin-netlify": "4.3.1",
+    "gatsby-plugin-netlify": "5.0.0",
     "gatsby-plugin-netlify-cms": "6.6.0",
     "gatsby-plugin-next-seo": "1.10.0",
     "gatsby-plugin-offline": "5.6.0",