fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-SEMVER-3247795

package.json

@@ -15,7 +15,7 @@
     "axios": "^1.2.1",
     "dotenv": "^16.0.3",
     "file-loader": "^6.2.0",
-    "gatsby": "^4.24.7",
+    "gatsby": "^5.0.0",
     "gatsby-image": "^3.11.0",
     "gatsby-link": "^4.24.1",
     "gatsby-plugin-canonical-urls": "^4.25.0",
@@ -33,7 +33,7 @@
     "gatsby-plugin-web-font-loader": "^1.0.4",
     "gatsby-react-router-scroll": "^6.3.0",
     "gatsby-source-filesystem": "^4.25.0",
-    "gatsby-source-prismic": "^5.2.10",
+    "gatsby-source-prismic": "^5.3.1",
     "gatsby-transformer-sharp": "^4.25.0",
     "prismic-reactjs": "^1.3.4",
     "prop-types": "^15.8.1",