Bump test-kitchen from 2.7.1 to 2.7.2 in /omnibus

[dependabot-preview[bot]]

Bumps test-kitchen from 2.7.1 to 2.7.2.

Release notes

Sourced from test-kitchen's releases.

v1.2.1: Better Berkshelf 2.0.x Loading (pre-threading)

Bug fixes

• Issue #357, pull request #358: Load needed (dynamic) dependencies for provisioners at creation time to prevent any native or dynamic code being loaded in a non-main thread (an issue on Mac with MRI Ruby 1.9/2.0). (@fnichol)

Improvements

• Pull request #358: Output the loaded version of Berkshelf or Librarian-Chef when converging to better help troubleshooting issues. (@fnichol)

Changelog

Sourced from test-kitchen's changelog.

2.7.2 (2020-09-29)

Full Changelog

• Various performance optimizations

Commits

• 3b4fa30 Release 2.7.2
• 61551a8 Merge pull request #1688 from test-kitchen/yaml
• 5be2ada Convert to YAML.dump
• b865674 Merge pull request #1687 from test-kitchen/perf
• 5e27396 Minor performance optimizations from rubocop-performance
• See full diff in compare view

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[dependabot-preview[bot]]

Looks like test-kitchen is up-to-date now, so this is no longer needed.