Bump tzlocal from 2.1 to 4.2

[dependabot]

Bumps tzlocal from 2.1 to 4.2.

Changelog

Sourced from tzlocal's changelog.

4.2 (2022-04-02)

• If TZ environment variable is set to /etc/localhost, and that's a link to a zoneinfo file, then tzlocal will now find the timezone name, and not just return a localtime TZ object.

4.1 (2021-10-29)

• No changes from 4.1b1.

4.1b1 (2021-10-28)

• It turns out a lot of Linux distributions make the links between zoneinfo aliases backwards, so instead of linking GB to Europe/London it actually links the other way. When /etc/localtime then links to Europe/London, and you also have a config file saying Europe/London, the code that checks if /etc/localtime is a symlink ends up at GB instead of Europe/London and we get an error, as it thinks GB and Europe/London are different zones.

  So now we check the symlink of all timezones in the uniqueness test. We still return the name in the config file, though, so you would only get GB or Zulu returned as the time zone instead of Europe/London or UTC if your only configuration is the /etc/localtime symlink, as that's checked last, and tzlocal will return the first configuration found.

• The above change also means that GMT and UTC are no longer seen as synonyms, as zoneinfo does not see them as synonyms. This might be controversial, but you just have to live with it. Pick one and stay with it. ;-)

4.0.2 (2021-10-26)

• Improved the error message when you had a conflict including a /etc/localtime symlink.

4.0.1 (2021-10-19)

• A long time bug in Ubuntu docker images seem to not get fixed, so I added a workaround.

4.0.1b1 (2021-10-18)

... (truncated)

Commits

• b2c0f73 Preparing release 4.2
• 5cc5d42 Preparing for release
• 7e12636 Support TZ pointing to a link
• d5fb741 Back to development: 4.2
• ca5eb5e Preparing release 4.1
• 0ea226b Back to development: 4.1b2
• 572d7ad Preparing release 4.1b1
• 4d25c45 Redo the synonym handling completely, and now only use zoneinfo symlinks
• f1049d2 Back to development: 4.0.3
• 29ea845 Preparing release 4.0.2
• Additional commits viewable in compare view

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