dep: bump puma from 5.6.2 to 5.6.4

Bumps puma from 5.6.2 to 5.6.4.

Release notes

Sourced from puma's releases.

5.6.4

• Security
  • Close several HTTP Request Smuggling exploits (CVE-2022-24790)

The 5.6.3 release was a mistake (released the wrong branch), 5.6.4 is correct.

Changelog

Sourced from puma's changelog.

5.6.4 / 2022-03-30

• Security
  • Close several HTTP Request Smuggling exploits (CVE-2022-24790)

Commits

• 7add06a 5.6.4
• 4475a46 5.6.3
• 5bb7d20 Merge pull request from GHSA-h99w-9q5r-gjq9
• See full diff in compare view

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