chore(deps): update typescript-eslint monorepo to v6.21.0

Author: renovate[bot]

package-lock.json

@@ -41,8 +41,8 @@
     "@types/aws-lambda": "8.10.137",
     "@types/jest": "29.5.12",
     "@types/node": "16.18.96",
-    "@typescript-eslint/eslint-plugin": "6.12.0",
-    "@typescript-eslint/parser": "6.12.0",
+    "@typescript-eslint/eslint-plugin": "6.21.0",
+    "@typescript-eslint/parser": "6.21.0",
     "aws-cdk": "2.115.0",
     "aws-cdk-lib": "2.115.0",
     "aws-sdk": "2.1601.0",