feat(deps): upgrade upstream dependencies (#1191)

Automated daily upgrade of upstream dependencies:
- rolldown (latest tag)
- vite (latest tag)
- vitest (latest npm version)
- tsdown (latest npm version)

Build status: success

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Medium Risk**
> Mostly dependency bumps, but they touch the project’s packaging/build toolchain (`tsdown`, `rolldown-plugin-dts`, `oxlint-tsgolint`) which could affect build output and CI behavior.
>
> **Overview**
> Updates upstream build/tooling dependencies across the workspace, notably bumping `tsdown` to `0.21.7` (and peer `@tsdown/css`/`@tsdown/exe` to `0.21.7`) and updating `packages/core` bundled versions accordingly.
>
> Refreshes the lockfile for these upgrades, including newer `oxlint-tsgolint` (`0.18.1`) and related transitive updates (e.g. `rolldown-plugin-dts`, `get-tsconfig`, `unrun`, and Babel `8.0.0-rc.3` packages).
>
> <sup>Written by [Cursor Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit 4a84367. This will update automatically on new commits. Configure [here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: Brooooooklyn

packages/core/package.json

@@ -136,8 +136,8 @@
   },
   "peerDependencies": {
     "@arethetypeswrong/core": "^0.18.1",
-    "@tsdown/css": "0.21.5",
-    "@tsdown/exe": "0.21.5",
+    "@tsdown/css": "0.21.7",
+    "@tsdown/exe": "0.21.7",
     "@types/node": "^20.19.0 || >=22.12.0",
     "@vitejs/devtools": "^0.1.0",
     "esbuild": "^0.27.0",
@@ -219,6 +219,6 @@
   "bundledVersions": {
     "vite": "8.0.3",
     "rolldown": "1.0.0-rc.12",
-    "tsdown": "0.21.5"
+    "tsdown": "0.21.7"
   }
 }