chore: remove reference to deleted third_party in renovate.json

Author: gregmagolan

renovate.json

@@ -1,20 +1,7 @@
 {
-  "extends": [
-    "config:js-app",
-    "helpers:pinGitHubActionDigests"
-  ],
-  "ignoreDeps": [
-    "bazel_skylib",
-    "io_bazel_skydoc",
-    "io_bazel_rules_k8s"
-  ],
-  "ignorePaths": [
-    "e2e",
-    "tools",
-    "third_party"
-  ],
-  "enabledManagers": [
-    "bazel"
-  ],
+  "extends": ["config:js-app", "helpers:pinGitHubActionDigests"],
+  "ignoreDeps": ["bazel_skylib", "io_bazel_skydoc", "io_bazel_rules_k8s"],
+  "ignorePaths": ["e2e", "tools"],
+  "enabledManagers": ["bazel"],
   "semanticPrefix": "chore"
 }