Bump the babel group across 1 directory with 2 updates

Bumps the babel group with 2 updates in the / directory: [@babel/core](https://github.com/babel/babel/tree/HEAD/packages/babel-core) and [@babel/preset-env](https://github.com/babel/babel/tree/HEAD/packages/babel-preset-env).


Updates `@babel/core` 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-core)

Updates `@babel/preset-env` from 7.28.5 to 7.29.3
- [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/v7.29.3/packages/babel-preset-env)

---
updated-dependencies:
- dependency-name: "@babel/core"
  dependency-version: 7.28.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: babel
- dependency-name: "@babel/preset-env"
  dependency-version: 7.28.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: babel
...

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

Author: dependabot[bot]

package.json

@@ -9,8 +9,8 @@
   "bugs": "https://github.com/hypothesis/browser-extension/issues",
   "repository": "hypothesis/browser-extension",
   "devDependencies": {
-    "@babel/core": "^7.28.5",
-    "@babel/preset-env": "^7.28.5",
+    "@babel/core": "^7.29.0",
+    "@babel/preset-env": "^7.29.3",
     "@babel/preset-typescript": "^7.28.5",
     "@hypothesis/frontend-build": "^5.1.0",
     "@hypothesis/frontend-testing": "^1.8.0",