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-ASYNC-2441827
- https://snyk.io/vuln/SNYK-JS-BABELTRAVERSE-5962462
- https://snyk.io/vuln/SNYK-JS-BROWSERIFYSIGN-6037026
- https://snyk.io/vuln/SNYK-JS-BROWSERSLIST-1090194
- https://snyk.io/vuln/SNYK-JS-DECODEURICOMPONENT-3149970
- https://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563
- https://snyk.io/vuln/SNYK-JS-EJS-1049328
- https://snyk.io/vuln/SNYK-JS-EJS-2803307
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-1064899
- https://snyk.io/vuln/SNYK-JS-EVENTSOURCE-2823375
- https://snyk.io/vuln/SNYK-JS-FOLLOWREDIRECTS-2332181
- https://snyk.io/vuln/SNYK-JS-FOLLOWREDIRECTS-2396346
- https://snyk.io/vuln/SNYK-JS-GLOBPARENT-1016905
- https://snyk.io/vuln/SNYK-JS-JSON5-3182856
- https://snyk.io/vuln/SNYK-JS-LOADERUTILS-3042992
- https://snyk.io/vuln/SNYK-JS-LOADERUTILS-3043105
- https://snyk.io/vuln/SNYK-JS-LOADERUTILS-3105943
- https://snyk.io/vuln/SNYK-JS-LODASH-1018905
- https://snyk.io/vuln/SNYK-JS-LODASH-1040724
- https://snyk.io/vuln/SNYK-JS-LODASHTEMPLATE-1088054
- https://snyk.io/vuln/SNYK-JS-MERGEDEEP-1070277
- 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-NODEFETCH-674311
- 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-NODEFORGE-598677
- https://snyk.io/vuln/SNYK-JS-NTHCHECK-1586032
- https://snyk.io/vuln/SNYK-JS-PATHPARSE-1077067
- https://snyk.io/vuln/SNYK-JS-POSTCSS-1090595
- https://snyk.io/vuln/SNYK-JS-POSTCSS-1255640
- https://snyk.io/vuln/SNYK-JS-POSTCSS-5926692
- https://snyk.io/vuln/SNYK-JS-SEMVER-3247795
- https://snyk.io/vuln/SNYK-JS-SSRI-1246392
- https://snyk.io/vuln/SNYK-JS-TAR-1536528
- https://snyk.io/vuln/SNYK-JS-TAR-1536531
- https://snyk.io/vuln/SNYK-JS-TAR-1536758
- https://snyk.io/vuln/SNYK-JS-TAR-1579147
- https://snyk.io/vuln/SNYK-JS-TAR-1579152
- https://snyk.io/vuln/SNYK-JS-TAR-1579155
- https://snyk.io/vuln/SNYK-JS-TERSER-2806366
- https://snyk.io/vuln/SNYK-JS-TRIM-1017038
- https://snyk.io/vuln/SNYK-JS-UNSETVALUE-2400660
- https://snyk.io/vuln/SNYK-JS-URLPARSE-1078283
- https://snyk.io/vuln/SNYK-JS-URLPARSE-1533425
- https://snyk.io/vuln/SNYK-JS-URLPARSE-2401205
- https://snyk.io/vuln/SNYK-JS-URLPARSE-2407759
- https://snyk.io/vuln/SNYK-JS-URLPARSE-2407770
- https://snyk.io/vuln/SNYK-JS-URLPARSE-2412697
- https://snyk.io/vuln/SNYK-JS-WS-1296835
- https://snyk.io/vuln/SNYK-JS-Y18N-1021887

docs/package.json

@@ -13,9 +13,9 @@
     "prettier:diff": "prettier --config .prettierrc --list-different \"**/*.{js,md}\""
   },
   "dependencies": {
-    "@docusaurus/core": "^2.0.0-alpha.63",
-    "@docusaurus/plugin-pwa": "^2.0.0-alpha.63",
-    "@docusaurus/preset-classic": "^2.0.0-alpha.63",
+    "@docusaurus/core": "^2.0.0",
+    "@docusaurus/plugin-pwa": "^2.0.0",
+    "@docusaurus/preset-classic": "^3.0.0",
     "@types/fs-extra": "^8.1.0",
     "@types/lodash": "^4.14.149",
     "@types/semver": "^7.1.0",