fix(deps): update docusaurus monorepo to v2.4.3

Author: renovate[bot]

src/plugins/docusaurus-plugin-alumni/package.json

@@ -13,9 +13,9 @@
     "postinstall": "yarn build"
   },
   "dependencies": {
-    "@docusaurus/theme-common": "2.0.0-beta.21",
-    "@docusaurus/utils": "2.0.0-beta.21",
-    "@docusaurus/utils-validation": "2.0.0-beta.21",
+    "@docusaurus/theme-common": "2.4.3",
+    "@docusaurus/utils": "2.4.3",
+    "@docusaurus/utils-validation": "2.4.3",
     "fs-extra": "11.1.1",
     "js-yaml": "4.1.0",
     "prettier": "3.0.3"