ci: pin third party actions

[l0b0]

Description of changes

Improves reproducibility of CI tasks, especially since actions often move their tags, resulting in foo@vN being equivalent to foo@vN.*.*. This is not rare - as you can see from the PR, most of the pinned actions have been moved. For example, actions/checkout@v4 has been moved to v4.1.1.

Dependabot knows how to update pinned dependencies and their comments, so there should be no overhead from this change.

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 23.11 Release Notes (or backporting 23.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

Priorities

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[zowoq]

Previous PR: #140301

[Mic92]

I guess we could try this out. Hopefully not too many commits go in the checkout action etc.

[zowoq]

If we're going to merge this we may as well pin all of the actions so the dependabot updates are consistent.

[l0b0]

If we're going to merge this we may as well pin all of the actions so the dependabot updates are consistent.

@zowoq Whoops, turns out npx pin-github-action --comment=' {ref}' .github/workflows/*.y*ml failed, but for file in .github/workflows/*.y*ml; do npx pin-github-action --comment=' {ref}' "$file" || echo "$file"; done seems to have processed all of them.

I've manually bumped the version tags to the latest tag with that commit ID. The build won't change (actions/checkout@v4 had already been moved to actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11, which has also been tagged with v4.1.1). By doing this, Dependabot will update the comment to reflect the patch-level tag, rather than keeping the tag the same when it moves. That is, given actions/checkout@ff… # v4, Dependabot would update only the hash, not giving any indication whether it was a patch or minor change. But given actions/checkout@ff… # v4.1.1, Dependabot will update the major, minor, or patch version appropriately.

[Mic92]

Ok. Let's try this out.