Update typescript-eslint monorepo to v6.21.0

Author: renovate[bot]

package.json

@@ -128,9 +128,9 @@
     "@types/faker": "5.5.9",
     "@types/jsonwebtoken": "9.0.5",
     "@types/node": "20.11.16",
-    "@typescript-eslint/eslint-plugin": "6.20.0",
-    "@typescript-eslint/eslint-plugin-tslint": "6.20.0",
-    "@typescript-eslint/parser": "6.20.0",
+    "@typescript-eslint/eslint-plugin": "6.21.0",
+    "@typescript-eslint/eslint-plugin-tslint": "6.21.0",
+    "@typescript-eslint/parser": "6.21.0",
     "async-test-util": "2.3.0",
     "@types/lokijs": "1.5.14",
     "@types/pouchdb": "6.4.2",