Bump @babel/preset-env from 7.28.5 to 7.29.0 in /js

Bumps [@babel/preset-env](https://github.com/babel/babel/tree/HEAD/packages/babel-preset-env) from 7.28.5 to 7.29.0.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.29.0/packages/babel-preset-env)

---
updated-dependencies:
- dependency-name: "@babel/preset-env"
  dependency-version: 7.29.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

js/package.json

@@ -53,7 +53,7 @@
     "@babel/cli": "^7.28.3",
     "@babel/core": "^7.29.0",
     "@babel/eslint-parser": "^7.28.5",
-    "@babel/preset-env": "^7.28.5",
+    "@babel/preset-env": "^7.29.0",
     "@jupyterlab/builder": "^4.5.1",
     "babel-jest": "^30.2.0",
     "cpy-cli": "^6.0.0",