Add cmake to Dockerfile dependencies

[smallstepman]

Rust's Clippy will fail to run if one of project's dependencies requires cmake. An example of such dependency would be:

Cargo.toml

[dependencies]
flate2 = { version = "1.0.11", default-features = false, features = ["zlib-ng"] }

because it depends on:

Cargo.lock

[[package]]
name = "libz-ng-sys"
version = "1.1.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3dd9f43e75536a46ee0f92b758f6b63846e594e86638c61a9251338a65baea63"
dependencies = [
 "cmake",
 "libc",
]

example of failed workflow: https://github.com/dfinity/dfx-extensions/actions/runs/5754121209/job/15598769038#step:5:1893

Readiness Checklist

Author/Contributor

• If documentation is needed for this change, has that been included in this pull request

Reviewing Maintainer

• Label as breaking if this is a large fundamental change
• Label as either automation, bug, documentation, enhancement, infrastructure, or performance