build(deps): bump gatsby-plugin-google-analytics in /docs (#2095)

Author: dependabot[bot]

docs/package-lock.json

@@ -15,7 +15,7 @@
     "gatsby-plugin-canonical-urls": "^2.10.0",
     "gatsby-plugin-catch-links": "^2.10.0",
     "gatsby-plugin-emotion": "^5.0.0",
-    "gatsby-plugin-google-analytics": "^2.11.0",
+    "gatsby-plugin-google-analytics": "^3.8.0",
     "gatsby-plugin-manifest": "^2.12.1",
     "gatsby-plugin-mdx": "^2.6.0",
     "gatsby-plugin-netlify": "^2.11.1",