Compilation error in asm-hashes "crate does not support Windows targets"

[hko-s]

rpgp CI errors out in "Build and test (Windows) (windows-latest, beta, x86_64-pc-windows-gnu)".

e.g. in https://github.com/rpgp/rpgp/actions/runs/9034288092/job/24826472326

    Checking rsa v0.9.6
error: crate does not support Windows targets
Error:   --> C:\Users\runneradmin\.cargo\registry\src\index.crates.io-6f17d22bba15001f\md5-asm-0.5.2\src/lib.rs:16:1
   |
16 | compile_error!("crate does not support Windows targets");
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: crate does not support Windows targets
Error:   --> C:\Users\runneradmin\.cargo\registry\src\index.crates.io-6f17d22bba15001f\sha1-asm-0.5.3\src/lib.rs:16:1
   |
16 | compile_error!("crate does not support Windows targets");
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: could not compile `md5-asm` (lib) due to 1 previous error
Error: warning: build failed, waiting for other jobs to finish...
error: could not compile `sha1-asm` (lib) due to 1 previous error
Error: The process 'C:\Users\runneradmin\.cargo\bin\cargo.exe' failed with exit code 101
0s

This PR seems to explain the background: RustCrypto/asm-hashes#79

[hko-s]

Fixed by 56505aa