Clippy errors in CI with Rust 1.72

[edmorley]

CI is currently failing with new Clippy errors as of the Rust 1.72 release:

error: useless use of `vec!`
   --> src/vrs.rs:131:36
    |
131 |           let mut composed_version = vec![
    |  ____________________________________^
132 | |             caps.get(1).map_or("0", |major| major.as_str()),
133 | |             caps.get(2).map_or("0", |minor| minor.as_str()),
134 | |             caps.get(3).map_or("0", |patch| patch.as_str()),
135 | |         ]
    | |_________^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
    = note: `-D clippy::useless-vec` implied by `-D warnings`
help: you can use an array directly
    |
131 ~         let mut composed_version = [caps.get(1).map_or("0", |major| major.as_str()),
132 +             caps.get(2).map_or("0", |minor| minor.as_str()),
133 +             caps.get(3).map_or("0", |patch| patch.as_str())]
    |

eg:
https://github.com/heroku/buildpacks-go/actions/runs/5965521142/job/16183138665#step:5:201

cc @joshwlewis