fix: upgrade multiple dependencies with Snyk

Snyk has created this PR to upgrade:
  - gatsby from 5.12.4 to 5.13.3.
    See this package in npm: https://www.npmjs.com/package/gatsby
  - gatsby-plugin-feed from 5.12.0 to 5.13.1.
    See this package in npm: https://www.npmjs.com/package/gatsby-plugin-feed
  - gatsby-plugin-manifest from 5.12.0 to 5.13.1.
    See this package in npm: https://www.npmjs.com/package/gatsby-plugin-manifest
  - gatsby-plugin-sharp from 5.12.0 to 5.13.1.
    See this package in npm: https://www.npmjs.com/package/gatsby-plugin-sharp
  - gatsby-remark-images from 7.12.0 to 7.13.1.
    See this package in npm: https://www.npmjs.com/package/gatsby-remark-images
  - gatsby-remark-prismjs from 7.12.0 to 7.13.1.
    See this package in npm: https://www.npmjs.com/package/gatsby-remark-prismjs
  - gatsby-remark-responsive-iframe from 6.12.0 to 6.13.1.
    See this package in npm: https://www.npmjs.com/package/gatsby-remark-responsive-iframe
  - gatsby-source-filesystem from 5.12.0 to 5.13.1.
    See this package in npm: https://www.npmjs.com/package/gatsby-source-filesystem
  - gatsby-transformer-remark from 6.12.0 to 6.13.1.
    See this package in npm: https://www.npmjs.com/package/gatsby-transformer-remark
  - gatsby-transformer-sharp from 5.12.0 to 5.13.1.
    See this package in npm: https://www.npmjs.com/package/gatsby-transformer-sharp

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

Author: snyk-bot

starters/blog/package.json

@@ -10,17 +10,17 @@
   "dependencies": {
     "@fontsource/merriweather": "^4.5.14",
     "@fontsource/montserrat": "^4.5.13",
-    "gatsby": "^5.12.4",
-    "gatsby-plugin-feed": "^5.12.0",
+    "gatsby": "^5.13.3",
+    "gatsby-plugin-feed": "^5.13.1",
     "gatsby-plugin-image": "^3.0.0",
-    "gatsby-plugin-manifest": "^5.12.0",
-    "gatsby-plugin-sharp": "^5.12.0",
-    "gatsby-remark-images": "^7.12.0",
-    "gatsby-remark-prismjs": "^7.12.0",
-    "gatsby-remark-responsive-iframe": "^6.12.0",
-    "gatsby-source-filesystem": "^5.12.0",
-    "gatsby-transformer-remark": "^6.12.0",
-    "gatsby-transformer-sharp": "^5.12.0",
+    "gatsby-plugin-manifest": "^5.13.1",
+    "gatsby-plugin-sharp": "^5.13.1",
+    "gatsby-remark-images": "^7.13.1",
+    "gatsby-remark-prismjs": "^7.13.1",
+    "gatsby-remark-responsive-iframe": "^6.13.1",
+    "gatsby-source-filesystem": "^5.13.1",
+    "gatsby-transformer-remark": "^6.13.1",
+    "gatsby-transformer-sharp": "^5.13.1",
     "prismjs": "^1.29.0",
     "react": "^18.1.0",
     "react-dom": "^18.1.0"