Enable branch protection for 0.N branches of futures-rs

[taiki-e]

futures-rs has 0.N branches (https://github.com/rust-lang/futures-rs/branches), and releases to crates-io are currently made from these branches.

[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/futures-rs':
      Rulesets:
          Creating '0.[1-9]'
            Include Branches: ["refs/heads/0.[1-9]"]
            Required approvals: 0