Update crates.io on-call team

[jdno]

The Rust Foundation has taken over the on-call support for crates.io and the marker team has been updated to give its engineers access to the relevant GitHub resources.

[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 github
[INFO  sync_team] 💻 Team Diffs:
    📝 Editing team 'rust-lang/crates-io-on-call':
      Adding member 'JoelMarcey' with member role
      Adding member 'LawnGnome' with member role
      Adding member 'Turbo87' with member role
      Adding member 'baumanj' with member role
      Adding member 'jdno' with maintainer role
      Adding member 'marcoieni' with maintainer role
      Adding member 'walterhpearce' with member role
      Deleting member 'tshepang'
      Deleting member 'skade'
      Deleting member 'justahero'
      Deleting member 'Veykril'
      Deleting member 'Xylakant'
      Deleting member 'pietroalbini'
      Deleting member 'listochkin'

[traviscross]

cc @rust-lang/crates-io @jtgeibel @Turbo87