move cargo to rulesets

[marcoieni]

No description provided.

[github-actions]

Dry-run check results

[WARN  rust_team::sync] sync-team is running in dry mode, no changes will be applied.
[INFO  rust_team::sync] synchronizing crates-io
[INFO  rust_team::sync] synchronizing github
[INFO  rust_team::sync] 💻 Repo Diffs:
    📝 Editing repo 'rust-lang/cargo':
      Branch Protections:
          rust-1.*
            Deleting branch protection
          master
            Deleting branch protection
      Rulesets:
          Creating 'master'
            Include Branches: ["refs/heads/master"]
            Require merge queue: true
            Required approvals: 1
            Required status checks: conclusion (integration_id: 15368)
          Creating 'rust-1.*'
            Include Branches: ["refs/heads/rust-1.*"]
            Required status checks: conclusion (integration_id: 15368)
            Required approvals: 1