fix: deps/npm/docs/package.json & deps/npm/docs/package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-PRISMJS-1076581

Author: snyk-bot

deps/npm/docs/package-lock.json

@@ -27,7 +27,7 @@
     "gatsby-remark-prismjs": "^3.3.28",
     "gatsby-source-filesystem": "^2.1.43",
     "gatsby-transformer-remark": "^2.6.45",
-    "prismjs": "^1.17.1",
+    "prismjs": "^1.23.0",
     "prop-types": "^15.7.2",
     "react": "^16.9.0",
     "react-dom": "^16.9.0",