Update dependency puma to v6 - autoclosed

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This PR contains the following updates:

Package	Update	Change
puma	major	'~> 4.3' -> '~> 6.0'

By merging this PR, the issue #59 will be automatically resolved and closed:

Severity	CVSS Score	CVE
Critical	9.8	CVE-2023-40175
High	7.5	CVE-2021-29509
High	7.5	CVE-2024-21647
Medium	5.9	CVE-2022-23634
Low	3.7	CVE-2021-41136

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• If you want to rebase/retry this PR, check this box

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⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: Gemfile.lock

Fetching gem metadata from https://rubygems.org/.........
Fetching gem metadata from https://rubygems.org/.
Resolving dependencies...

The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
Your bundle is locked to mimemagic (0.3.4), but that version could not be found
in any of the sources listed in your Gemfile. If you haven't changed sources,
that means the author of mimemagic (0.3.4) has removed it. You'll need to update
your bundle to a version other than mimemagic (0.3.4) that hasn't been removed
in order to install.