Update dependency puppet-syntax to v4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
puppet-syntax (source)	'~> 3.3' -> '~> 4.0'

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Release Notes

gds-operations/puppet-syntax (puppet-syntax)

v4.0.0

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Full Changelog

Breaking changes:

• Drop Ruby 2.4/2.5/2.6 & Puppet 5/6 support #​145 (bastelfreak)

Implemented enhancements:

• Add Ruby 3.2 / Puppet 8 support #​147 (bastelfreak)
• support aliases in hiera yaml #​144 (akerl)
• Implement RuboCop #​137 (bastelfreak)

Fixed bugs:

• fix "NameError: uninitialized constant Puppet::Util" #​155 (mxey)
• add all known hiera-eyaml methods #​154 (mxey)

Merged pull requests:

• README.md: Fix badges #​161 (bastelfreak)
• gemspec: Add version requirements & CI: Build Gems ins strict & verbose mode #​160 (bastelfreak)
• Update voxpupuli-rubocop requirement from ~> 2.0.0 to ~> 2.4.0 #​159 (dependabot[bot])
• Update voxpupuli-rubocop requirement from ~> 1.4.0 to ~> 2.0.0 #​152 (dependabot[bot])
• GCG: Add faraday-retry dep #​149 (bastelfreak)
• Switch to voxpupuli-rubocop #​148 (bastelfreak)
• CI: add dummy job to depend on #​146 (bastelfreak)
• Drop Ruby 1.8 testcode #​142 (bastelfreak)
• rubocop: fix whitespace and newline warnings #​141 (bastelfreak)
• rubocop: fix trailing comma #​140 (bastelfreak)

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