Bump puma from 5.5.0 to 5.5.1

Bumps puma from 5.5.0 to 5.5.1.

Release notes

Sourced from puma's releases.

5.5.1

https://github.com/puma/puma/security/advisories/GHSA-48w2-rm65-62xx

Changelog

Sourced from puma's changelog.

5.5.1 / 2021-10-12

• Security
  • Do not allow LF as a line ending in a header (CVE-2021-41136)

Commits

• acdc3ae Merge pull request from GHSA-48w2-rm65-62xx
• 61dd7f4 CI: Improve "set SSL" step name
• 20dc923 Extract calls to purge_interrupt_queue (#2716)
• cf991f6 Update instructions for GitHub actions [ci skip] (#2717)
• 520dc92 Clean up some duplicated code (#2715)
• 21e9a4a Clean up and format markdown documentation (#2714)
• f0d73a7 Improve localhost SSL integration docs (#2712)
• e2815b6 Reimplement delete environment tests (#2710)
• e3acca8 Update contributing.md [ci skip] (#2705)
• a6cdca8 Delete env tests that dont test anything
• Additional commits viewable in compare view