Remove unnecessary permissions in workflows

[sashashura]

This is a security best practice because by default workflows run with extended set of permissions (except from on: pull_request from external forks). By specifying any permission explicitly all others are set to none. By using the principle of least privilege the damage a compromised workflow can do (because of an injection or compromised third party tool or action) is restricted.
It is recommended to have most strict permissions on the top level and grant write permissions on job level case by case.

[sashashura]

#11632

[adiroiban]

Thanks for your work.

Just a note.

If Fixes #1234 is added to the PR description, GitHub will automatically link back that PR.

it will also insert this under the issue title: May be fixed by #11632

The Fixes #1234 will also make sure that the issue is auto-closed when the PR is closed.