fix: upgrade gatsby-plugin-image from 3.0.0 to 3.12.2

Snyk has created this PR to upgrade gatsby-plugin-image from 3.0.0 to 3.12.2.

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

See this project in Snyk:
https://app.snyk.io/org/sammytezzy/project/20794044-5f49-41de-a492-223de49c2642?utm_source=github&utm_medium=referral&page=upgrade-pr

starters/gatsby-starter-wordpress-blog/package.json

@@ -12,7 +12,7 @@
     "@fontsource/montserrat": "^4.5.13",
     "@wordpress/block-library": "^7.18.0",
     "gatsby": "^5.0.0",
-    "gatsby-plugin-image": "^3.0.0",
+    "gatsby-plugin-image": "^3.12.2",
     "gatsby-plugin-manifest": "^5.0.0",
     "gatsby-plugin-sharp": "^5.0.0",
     "gatsby-source-wordpress": "^7.0.0",