fix: upgrade gatsby-plugin-image from 3.0.0 to 3.13.1

Snyk has created this PR to upgrade gatsby-plugin-image from 3.0.0 to 3.13.1.

See this package in npm:
https://www.npmjs.com/package/gatsby-plugin-image

See this project in Snyk:
https://app.snyk.io/org/sammyfilly/project/c2ba23e1-8e78-4d98-a602-4215c0203b4d?utm_source=github&utm_medium=referral&page=upgrade-pr

starters/blog/package.json

@@ -12,7 +12,7 @@
     "@fontsource/montserrat": "^4.5.13",
     "gatsby": "^5.12.4",
     "gatsby-plugin-feed": "^5.12.0",
-    "gatsby-plugin-image": "^3.0.0",
+    "gatsby-plugin-image": "^3.13.1",
     "gatsby-plugin-manifest": "^5.12.0",
     "gatsby-plugin-sharp": "^5.12.0",
     "gatsby-remark-images": "^7.12.0",