renovate: Ignore `Cargo.toml` for `workspace-hack` (#27976)

Marshall Bowers created

This PR adds the `Cargo.toml` for the `workspace-hack` crate to the
ignore list for Renovate, as it is opening a number of PRs against it
that will interfere with it.

Release Notes:

- N/A

Change summary

renovate.json | 1 +
1 file changed, 1 insertion(+)

Detailed changes

renovate.json 🔗

@@ -14,6 +14,7 @@
     "dependencyDashboardApproval": true
   },
   "prFooter": "Release Notes:\n\n- N/A",
+  "ignorePaths": ["**/node_modules/**", "tooling/workspace-hack/**"],
   "packageRules": [
     {
       "description": "Group wasmtime crates together.",