chore(deps): update build tools (#5)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -55,7 +55,7 @@
     "@biomejs/biome": "^2.1.1",
     "@playwright/test": "^1.53.2",
     "@rsbuild/core": "^1.4.2",
-    "@rslib/core": "^0.10.4",
+    "@rslib/core": "^0.12.0",
     "@types/node": "^22.15.34",
     "@winner-fed/winjs": "*",
     "@types/serialize-javascript": "5.0.4",