RUST-1545 Consider removing the take_mut dependency

Versions/Environment

1. What version of Rust are you using?
   Rust 1.65
2. What operating system are you using?
   N/A
3. What versions of the driver and its dependencies are you using? (Run
   cargo pkgid mongodb & cargo pkgid bson)
   Driver v2.3.1
4. What version of MongoDB are you using? (Check with the MongoDB shell using db.version())
   N/A
5. What is your MongoDB topology (standalone, replica set, sharded cluster, serverless)?
   N/A

Describe the bug

There is a potential memory leak in take_mut, which I noted from 2 issues filed with cargo-crev. A pull request with a fix was opened several years ago and it hasn't been merged yet, so the repository might also be rightly considered abandoned.

Is this dependency necessary? Something to consider, as it also uses unproven unsafe code.

https://github.com/yvt/crev-proofs and https://github.com/vorner/crev-proofs both reported issues.

Start by tracing the take_mut dependency through the driver's Rust source and checking whether the reported upstream fix addresses the cargo-crev concerns. Done means determining whether it can be removed or safely replaced, with the driver's existing behavior preserved.