msrv check failing on main due to `tonic@0.14.6`

[Jefffrey]

Describe the bug

see run https://github.com/apache/arrow-rs/actions/runs/25472344356/job/74738606768

{"type":"check_result","toolchain":{"version":"1.85.0","target":"x86_64-unknown-linux-gnu","components":[]},"is_compatible":false,"error":"error: rustc 1.85.0 is not supported by the following packages:\n  tonic@0.14.6 requires rustc 1.88\n  tonic-prost@0.14.6 requires rustc 1.88\nEither upgrade rustc or select compatible dependency versions with\n`cargo update <name>@<current-ver> --precise <compatible-ver>`\nwhere `<compatible-ver>` is the latest version supporting rustc 1.85.0\n\n"}
{"type":"check_toolchain","toolchain":{"version":"1.85.0","target":"x86_64-unknown-linux-gnu","components":[]},"scope":{"id":1,"marker":"end"}}
{"type":"subcommand_result","subcommand_id":"verify","result":{"toolchain":{"version":"1.85.0","target":"x86_64-unknown-linux-gnu","components":[]},"is_compatible":false,"error":"error: rustc 1.85.0 is not supported by the following packages:\n  tonic@0.14.6 requires rustc 1.88\n  tonic-prost@0.14.6 requires rustc 1.88\nEither upgrade rustc or select compatible dependency versions with\n`cargo update <name>@<current-ver> --precise <compatible-ver>`\nwhere `<compatible-ver>` is the latest version supporting rustc 1.85.0\n\n"}}
{"type":"terminate_with_failure","reason":{"description":"Crate source was found to be incompatible with Rust version '1.85.0' specified as MSRV in the Cargo manifest located at '/__w/arrow-rs/arrow-rs/arrow-integration-testing/Cargo.toml'"}}

To Reproduce

Expected behavior

Additional context

[alamb]

I think the "right" solution here is to check in a Cargo.lock file so that we control what dependencies we are testing against rather than verify MSRV against the tip of all our dependencies

I'll make a PR

[alamb]

The guidance on lock files changed here: https://blog.rust-lang.org/2023/08/29/committing-lockfiles/

[alamb]

Here is a PR to fix it:

• Fix MSRV check by checking in Cargo.lock #9941