ci: Prevent renovate from changing stable patch/minor versions in cargo.toml

renovate.json

@@ -18,6 +18,11 @@
       "matchPackageNames": ["node", "pnpm"],
       "matchDepTypes": ["engines", "packageManager"],
       "enabled": false
+    },
+    {
+      "description": "Prevent unwanted minor/patch Cargo.toml updates",
+      "matchManagers": ["cargo"],
+      "rangeStrategy": "update-lockfile"
     }
   ],
   "postUpdateOptions": ["pnpmDedupe"]