test: run bash-completion tests #718

Job	Run time
Benchmarks	5m 46s
Source code checks (stable)	35s
Build (x86_64/linux)	1m 7s
Source code checks (1.75.0)	28s
Build (aarch64/macos)	1m 15s
Check for unneeded dependencies	59s
Build (aarch64/linux)	1m 52s
Build (wasm32/wasi-0.2)	50s
Test (linux)	1m 50s
Build (x86_64/windows)	1m 38s
Test (macOS)	1m 42s
bash-completion tests	12s
OS target tests (Fedora/latest)	24s
OS target tests (Debian/latest)	16s
OS target tests (Arch Linux/latest)	25s
	19m 19s

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