fix: docs/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ANSIHTML-1296849
- https://snyk.io/vuln/SNYK-JS-ANSIREGEX-1583908
- https://snyk.io/vuln/SNYK-JS-AXIOS-6032459
- https://snyk.io/vuln/SNYK-JS-BABELTRAVERSE-5962462
- https://snyk.io/vuln/SNYK-JS-DECOMPRESSTAR-559095
- https://snyk.io/vuln/SNYK-JS-EVENTSOURCE-2823375
- https://snyk.io/vuln/SNYK-JS-GLOBPARENT-1016905
- https://snyk.io/vuln/SNYK-JS-GOT-2932019
- https://snyk.io/vuln/SNYK-JS-HTTPCACHESEMANTICS-3248783
- https://snyk.io/vuln/SNYK-JS-JSON5-3182856
- https://snyk.io/vuln/SNYK-JS-MINIMATCH-3050818
- https://snyk.io/vuln/SNYK-JS-MINIMIST-2429795
- https://snyk.io/vuln/SNYK-JS-NODEFETCH-2342118
- https://snyk.io/vuln/SNYK-JS-NODEFORGE-2330875
- https://snyk.io/vuln/SNYK-JS-NODEFORGE-2331908
- https://snyk.io/vuln/SNYK-JS-NODEFORGE-2430337
- https://snyk.io/vuln/SNYK-JS-NODEFORGE-2430339
- https://snyk.io/vuln/SNYK-JS-NODEFORGE-2430341
- https://snyk.io/vuln/SNYK-JS-PARSEPATH-2936439
- https://snyk.io/vuln/SNYK-JS-POSTCSS-5926692
- https://snyk.io/vuln/SNYK-JS-REQUEST-3361831
- https://snyk.io/vuln/SNYK-JS-SEMVER-3247795
- https://snyk.io/vuln/SNYK-JS-SEMVERREGEX-1047770
- https://snyk.io/vuln/SNYK-JS-SEMVERREGEX-1584358
- https://snyk.io/vuln/SNYK-JS-SEMVERREGEX-1585624
- https://snyk.io/vuln/SNYK-JS-SEMVERREGEX-2824151
- https://snyk.io/vuln/SNYK-JS-TOUGHCOOKIE-5672873
- https://snyk.io/vuln/SNYK-JS-TRIM-1017038
- https://snyk.io/vuln/SNYK-JS-TRIMNEWLINES-1298042
- https://snyk.io/vuln/SNYK-JS-UNSETVALUE-2400660
- https://snyk.io/vuln/SNYK-JS-WS-1296835
- https://snyk.io/vuln/SNYK-JS-XML2JS-5414874

docs/package.json

@@ -5,21 +5,21 @@
   "dependencies": {
     "@commonground/design-system": "12.5.0",
     "formik": "2.1.4",
-    "gatsby": "2.24.86",
+    "gatsby": "4.22.0",
     "gatsby-image": "2.4.13",
     "gatsby-plugin-i18n": "1.0.1",
     "gatsby-plugin-manifest": "2.4.18",
     "gatsby-plugin-offline": "3.2.17",
     "gatsby-plugin-plausible": "0.0.7",
     "gatsby-plugin-react-helmet": "3.3.10",
-    "gatsby-plugin-sharp": "2.6.19",
+    "gatsby-plugin-sharp": "3.15.0",
     "gatsby-plugin-styled-components": "3.3.10",
     "gatsby-remark-check-links": "2.1.0",
-    "gatsby-remark-images": "3.3.18",
+    "gatsby-remark-images": "5.12.0",
     "gatsby-remark-prismjs": "3.5.10",
     "gatsby-source-filesystem": "2.3.19",
-    "gatsby-transformer-remark": "2.8.25",
-    "gatsby-transformer-sharp": "2.5.11",
+    "gatsby-transformer-remark": "4.0.0",
+    "gatsby-transformer-sharp": "3.15.0",
     "prismjs": "^1.25.0",
     "prop-types": "15.7.2",
     "react": "16.13.1",