[Snyk] Security upgrade puma from 5.6.5 to 5.6.9

[matievisthekat]

Snyk has created this PR to fix 1 vulnerabilities in the rubygems dependencies of this project.

Snyk changed the following file(s):

• Gemfile
• Gemfile.lock

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	HTTP Request Smuggling SNYK-RUBY-PUMA-8062124	696

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[codeclimate]

Code Climate has analyzed commit 8b25f6f and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 30.9% (0.0% change).

View more on Code Climate.