Bump @rollup/plugin-babel in /src/pretix/static/npm_dir (#5581)

Bumps [@rollup/plugin-babel](https://github.com/rollup/plugins/tree/HEAD/packages/babel) from 6.0.4 to 6.1.0.
- [Changelog](https://github.com/rollup/plugins/blob/master/packages/babel/CHANGELOG.md)
- [Commits](https://github.com/rollup/plugins/commits/url-v6.1.0/packages/babel)

---
updated-dependencies:
- dependency-name: "@rollup/plugin-babel"
  dependency-version: 6.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/pretix/static/npm_dir/package.json

@@ -6,7 +6,7 @@
   "dependencies": {
     "@babel/core": "^7.28.4",
     "@babel/preset-env": "^7.28.5",
-    "@rollup/plugin-babel": "^6.0.4",
+    "@rollup/plugin-babel": "^6.1.0",
     "@rollup/plugin-node-resolve": "^16.0.3",
     "vue": "^2.7.16",
     "rollup": "^2.79.1",