Update council for March 2026 selections

[ehuss]

This updates the council membership for the March 2026 selections (zulip).

Note that Mara is moving from libs to launching pad, but the libs team has not yet named a replacement. I'm leaving their slot empty for now until they provide a replacement.

[ehuss]

cc @rust-lang/leadership-council

[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] 💻 Team Diffs:
    📝 Editing team 'rust-lang/all':
      Deleting member 'jamesmunns'
    📝 Editing team 'rust-lang/inside-rust-reviewers':
      Adding member 'lqd' with member role
      Deleting member 'jamesmunns'
      Deleting member 'cuviper'
    📝 Editing team 'rust-lang/leadership-council':
      Adding member 'lqd' with member role
      Deleting member 'jamesmunns'
      Deleting member 'cuviper'
    📝 Editing team 'rust-lang-nursery/leadership-council':
      Adding member 'lqd' with member role
      Deleting member 'jamesmunns'
      Deleting member 'cuviper'
    💻 Org membership Diffs:
    ❌ Removing the following members from `rust-lang`:
      - jamesmunns
    ❌ Removing the following members from `rust-lang-nursery`:
      - jamesmunns

[jieyouxu]

Double-checked #council > March 2026 Representative selection.