zuul fails to install puppetlabs_spec_helper gem

[Leonardo Fagundes Luz Serrano]

Brief Description
-----------------
stx-puppet repo reviews failing zuul

This is due to a version 7.0.0 being released on Oct 18 2023 and it calls for puppetlabs-puppet-lint ~> 5.0 while the previous version had a dependency on puppet-lint ~> 4.0

Severity
--------
<Critical: System/Feature is not usable due to the defect>
No commits can merge

Steps to Reproduce
------------------
Upload commit to stx-puppet

Expected Behavior
------------------
Commit evaluated by tox/zuul

Actual Behavior
----------------
Commits fail due to issues not related to the commit

Reproducibility
---------------
<Reproducible>

System Configuration
--------------------
NA

Branch/Pull Time/Commit
-----------------------
master

Last Pass
---------
Oct 17

Timestamp/Logs
--------------
ERROR: Error installing puppetlabs_spec_helper:
 "puppet-lint" from puppetlabs-puppet-lint conflicts with installed executable from puppet-lint

https://zuul.opendev.org/t/openstack/build/80c0b71ee3f546d6b78e6f653f47310f

Test Activity
-------------
[Sanity, Feature Testing, Regression Testing, Developer Testing, Evaluation, Other - Please specify]

Workaround
----------
Describe workaround if available

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/stx-puppet/+/898853
Committed: https://opendev.org/starlingx/stx-puppet/commit/277529f9f97752c15b901d1d8f5c7e82190e4367
Submitter: "Zuul (22348)"
Branch: master

commit 277529f9f97752c15b901d1d8f5c7e82190e4367
Author: Leonardo Fagundes Luz Serrano <email address hidden>
Date: Thu Oct 19 15:34:18 2023 -0300

    tox/zuul: Set puppetlabs_spec_helper version to 6.0.3

    Temporary fix for zuul failing puppet lint gem install

    TestPlan:
    PASS Zuul

    Closes-Bug: 2039880

    Change-Id: Id5557933551c226516148ec74559305320e4597f
    Signed-off-by: Leonardo Fagundes Luz Serrano <email address hidden>