Release arrow-rs / parquet Major version `60.0.0` (August 2026)

[alamb]

Let's keep the code flowing. Part of

• [EPIC] A collection of release tickets #7392

Release Checklist:

• Verify with downstream DataFusion tests:
• Release notes and bump version:
• Release Candidate + Vote thread:
• Release to crates.io / approval:
• Create follow on tickets

Required items for release

• None yet

Requested items for release

• Implement PARQUET-2249: Introduce IEEE 754 total order #9619 from @etseidl
• chore(deps): bump rand from 0.9.4 to 0.10.1 #10192 from @Jefffrey
• deps: bump object_store to 0.14.0 #10179 from @alamb
• Use Metadata struct instead of HashMap<String, String> for metadata: Ordered; cheap to clone #10075 from @emilk
• Consider bumping msrv from 1.85 #10226 from @Jefffrey
  • Bump MSRV to 1.88 #10254
• remove the typo'd alias from fix: Rename parquet feature flag 'flate2-rust_backened' to 'flate2-rust_backend' #10239
• remove flight-sql-experimental feature from arrow-flight #10276

[etseidl]

Reminder to include

• Implement PARQUET-2249: Introduce IEEE 754 total order #9619

[Jefffrey]

consider including

• chore(deps): bump rand from 0.9.4 to 0.10.1 #10192

as part of this release

[Jefffrey]

something to also consider:

• Consider bumping msrv from 1.85 #10226