Merge pull request #8 from Spacecraft-Software/ci-pin-toolchain #26

Job	Run time
clippy	55s
headless build (no TUI / clipboard deps)	1m 2s
cargo-deny	38s
test (macos-latest)	1m 35s
vault --version emits §13.2 attribution	56s
cargo-audit	3m 14s
test (ubuntu-latest)	1m 24s
rustfmt	13s
	9m 57s

Provide feedback