Bump idna from 2.6 to 2.7
Bump idna from 2.6 to 2.7

Bumps [idna](https://github.com/kjd/idna) from 2.6 to 2.7.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](https://github.com/kjd/idna/compare/v2.6...v2.7)

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