Update typescript-eslint monorepo to v8.20.0 (#614)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -32,8 +32,8 @@
     "@types/hapi__joi": "17.1.15",
     "@types/jest": "29.5.14",
     "@types/node": "22.10.7",
-    "@typescript-eslint/eslint-plugin": "8.18.1",
-    "@typescript-eslint/parser": "8.18.1",
+    "@typescript-eslint/eslint-plugin": "8.20.0",
+    "@typescript-eslint/parser": "8.20.0",
     "eslint": "9.18.0",
     "eslint-config-prettier": "10.0.1",
     "express": "4.21.2",