Bump twine from 3.4.1 to 3.4.2

[dependabot-preview[bot]]

Bumps twine from 3.4.1 to 3.4.2.

Changelog

Sourced from twine's changelog.

Twine 3.4.2 (2021-07-20)

Bugfixes

• Improve error message for unsupported metadata. (#755)
• Improve error message for a missing config file. (#770)
• Do not include md5_digest or blake2_256_digest if FIPS mode is enabled on the host. This removes those fields from the metadata before sending the metadata to the repository. (#776)

Commits

• 9652b93 Update changelog for 3.4.2 (#778)
• fc20d94 Send only the digests we have from PackageFile (#776)
• b4a196e Improve handling of missing config file (#770)
• e07ce0e Tweak resource list for users (#769)
• 30090d3 Fix the Docs (#767)
• 3163fd0 Add testenv:dev to create development environment (#765)
• 0cf7f88 Rename master to main (#766)
• 12469ce Use shutil for rmtree (#763)
• e0a3a57 Install missing stubs for mypy 0.900 (#762)
• 2afd7ad Add note about upgrading pip (#759)
• Additional commits viewable in compare view

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