ci: Add concurrency to cancel previous workflow runs

[dblythy]

New Pull Request Checklist

• I am not disclosing a vulnerability.
• I am creating this PR in reference to an issue.

Issue Description

Adds concurrency to minimise the amount of outdated workflows that are run.

Closes: n/a

Approach

n/a

TODOs before merging

n/a

[parse-github-assistant]

I will reformat the title to use the proper commit message syntax.

[parse-github-assistant]

Thanks for opening this pull request!

• ❌ Please link an issue that describes the reason for this pull request, otherwise your pull request will be closed. Make sure to write it as Closes: #123 in the PR description, so I can recognize it.

[codecov]

Codecov Report

Base: 99.89% // Head: 99.89% // No change to project coverage 👍

Coverage data is based on head (9ec8cb2) compared to base (6125419).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##            alpha    #1617   +/-   ##
=======================================
  Coverage   99.89%   99.89%           
=======================================
  Files          61       61           
  Lines        5973     5973           
  Branches     1367     1367           
=======================================
  Hits         5967     5967           
  Misses          6        6           

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[mtrezza]

Thanks for this!

[parseplatformorg]

🎉 This change has been released in version 4.0.0-alpha.4

[parseplatformorg]

🎉 This change has been released in version 4.0.0-beta.1

[parseplatformorg]

🎉 This change has been released in version 4.0.0