Bump symfony/dotenv from 6.4.4 to 6.4.8 (#622)

Bumps [symfony/dotenv](https://github.com/symfony/dotenv) from 6.4.4 to 6.4.8.
- [Release notes](https://github.com/symfony/dotenv/releases)
- [Changelog](https://github.com/symfony/dotenv/blob/7.1/CHANGELOG.md)
- [Commits](symfony/dotenv@v6.4.4...v6.4.8)

---
updated-dependencies:
- dependency-name: symfony/dotenv
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]