create an email alias for the goals team and move older contributors to alumni

[nikomatsakis]

No description provided.

[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/all':
      Deleting member 'nandsh'
    📝 Editing team 'rust-lang/goals':
      Deleting member 'nandsh'
      Deleting member 'traviscross'
      Deleting member 'davidtwco'
    💻 Repo Diffs:
    📝 Editing repo 'rust-lang/bors':
      Rulesets:
          Ruleset for main
            No changes
    💻 Org membership Diffs:
    ❌ Removing the following members from `rust-lang`:
      - nandsh