Add @ojeda to goal-owners

[tomassedovic]

Miguel Ojeda is the lead for the Rust for Linux project and while I'm the point of contact, he should be able to write send updates or make corrections.

[github-actions]

Dry-run check results

[WARN  sync_team] sync-team is running in dry mode, no changes will be applied.
[INFO  sync_team] synchronizing crates-io
[INFO  sync_team] synchronizing github
[INFO  sync_team] 💻 Team Diffs:
    📝 Editing team 'rust-lang/goal-owners':
      Adding member 'ojeda' with member role
    💻 Repo Diffs:
    📝 Editing repo 'rust-lang/bors':
      Rulesets:
          Ruleset for main
            No changes

[ojeda]

Thanks @tomassedovic!