Update mdns requirement from ^2.5.1 to ^2.7.2
Update mdns requirement from ^2.5.1 to ^2.7.2

Updates the requirements on [mdns](https://github.com/agnat/node_mdns) to permit the latest version.
- [Release notes](https://github.com/agnat/node_mdns/releases)
- [Changelog](https://github.com/agnat/node_mdns/blob/master/CHANGES)
- [Commits](https://github.com/agnat/node_mdns/compare/v2.5.1...v2.7.2)

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