Release arrow-rs / parquet Major version `61.0.0` (November 2026)

[alamb]

Let's keep the code flowing. Part of

• [EPIC] A collection of release tickets #7392

Release Checklist:

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

Required items for release

• None yet

Requested items for release

• None yet

[kevinjqliu]

Re-evaluate MSRV for 61.0.0. Context: #10254 (comment)

• Audit dependency requirements and determine whether Rust 1.95 is justified.
• Rust 1.95 becomes policy-eligible on October 16, 2026 😄