Increase recommended Rust toolchain to 1.74.0

[mulkieran]

• [x] Fix any newly introduced compiler or clippy errors:

  • [x] devicemapper-rs
  • [x] libblkid-rs
  • [x] libcryptsetup-rs
  • [x] stratisd special instructions:
  • > CLIPPY_FIX=1 make clippy (should succeed)
  • If the previous step succeeded, continue, else, fall back on by-hand approach. If it failed, post the error as a comment in this issue.
  • commit all changes put in by clippy, a single commit is fine
  • > make build-all-rust (should succeed)
  • If the previous step failed, remove the previous commit and fall back on by-hand approach. Otherwise, continue. If it failed, post the error in the comments in the issue.
  • > make clippy
  • If the previous step succeeded, make a PR, stop. Otherwise use the by-hand approach to fix the remaining lints.

• [x] Give karma for f38 Rust release: https://bodhi.fedoraproject.org/updates/FEDORA-2023-6a126ed2a5

• [x] Bump current development toolchain in GitHub workflows

  • [x] devicemapper-rs
  • [x] libblkid-rs
  • [x] libcryptsetup-rs
  • [x] stratisd
  • [x] stratis-cli

[bgurney-rh]

No clippy errors in devicemapper-rs, libblkid-rs, or libcryptsetup-rs.