fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-GLOBPARENT-1016905
- https://snyk.io/vuln/SNYK-JS-TAR-1579147
- https://snyk.io/vuln/SNYK-JS-TAR-1579152
- https://snyk.io/vuln/SNYK-JS-TAR-1579155

Author: snyk-bot

package.json

@@ -25,7 +25,7 @@
 		"documentation": "^13.2.0",
 		"eslint": "^7.32.0",
 		"fs-extra": "^7.0.1",
-		"gatsby": "^2.32.11",
+		"gatsby": "^3.13.0",
 		"gatsby-plugin-react-helmet": "^3.3.3",
 		"gatsby-plugin-remove-fingerprints": "^0.0.2",
 		"gatsby-plugin-sass": "^2.8.0",
@@ -38,7 +38,7 @@
 		"mj-pa": "^1.3.1",
 		"moment": "^2.23.0",
 		"moment-strftime": "^0.5.0",
-		"node-sass": "^4.14.1",
+		"node-sass": "^5.0.0",
 		"node-sass-utils": "^1.1.2",
 		"postcss": "^8.2.8",
 		"react": "^16.14.0",