Revert "Merge branch 'diffblue-ci-template' into 'master'"

Purpose of revert

Checklist

• Create an issue to reinstate the merge request and assign it to the author of the reverted merge request. - #433352 (closed)
• Read through the Responsibilities of the Broken master resolution DRI.
• Add the appropriate labels before the MR is created. We can skip CI/CD jobs only if the labels are added before the CI/CD pipeline is created.

Milestone info

• I am reverting something in the current milestone. No changelog is needed, and I've added a ~"regression:*" label.

Related issues and merge requests