chore(deps-dev): bump gatsby-plugin-google-analytics from 2.4.1 to 2.5.0

Bumps [gatsby-plugin-google-analytics](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-google-analytics) from 2.4.1 to 2.5.0.
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-google-analytics/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-google-analytics@2.5.0/packages/gatsby-plugin-google-analytics)

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -77,7 +77,7 @@
     "gatsby": "^2.25.4",
     "gatsby-background-image": "^1.2.0",
     "gatsby-plugin-emotion": "^4.3.15",
-    "gatsby-plugin-google-analytics": "^2.4.1",
+    "gatsby-plugin-google-analytics": "^2.5.0",
     "gatsby-plugin-google-fonts": "^1.0.1",
     "gatsby-plugin-manifest": "^2.5.2",
     "gatsby-plugin-offline": "^3.4.0",