docs-util: Upgrade typedoc to 0.26 (#7853)

Upgrade typedoc to v0.26 + make changes based on the update

Note: This update produces an error when generating model references when the models use the `createPsqlIndexStatementHelper` decorator. As this isn't a breaking error, and as we'll move to DML in the future, it's not necessary to spend time on a fix.

www/utils/packages/workflows-diagrams-generator/package.json

@@ -21,7 +21,7 @@
     "@mermaid-js/mermaid-cli": "^10.6.1",
     "commander": "^11.1.0",
     "ts-node": "^10.9.1",
-    "typescript": "5.2"
+    "typescript": "5.5"
   },
   "devDependencies": {
     "@types/node": "^20.9.4"