Bump haml from 4.0.7 to 5.1.2
Bump haml from 4.0.7 to 5.1.2

Bumps [haml](https://github.com/haml/haml) from 4.0.7 to 5.1.2.
- [Release notes](https://github.com/haml/haml/releases)
- [Changelog](https://github.com/haml/haml/blob/master/CHANGELOG.md)
- [Commits](https://github.com/haml/haml/compare/4.0.7...v5.1.2)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
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