ci: continuously check that musl builds of cargo-codspeed works

[GuillaumeLagrange]

Additional safety after #128 to make sure we never publish a version if we do not have the binaries at the ready

Tested in https://github.com/CodSpeedHQ/codspeed-rust/actions/runs/18219278778

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #129 will degrade performances by 7.28%

_{Comparing check-musl-build-in-ci (22e8366) with main (88d41d9)}

Summary

⚡ 12 improvements
❌ 6 regressions
✅ 168 untouched

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	bench_array1[10]	225 ns	195.8 ns	+14.89%
⚡	bench_array1[4]	183.6 ns	154.4 ns	+18.88%
⚡	bench_array2[10]	225 ns	195.8 ns	+14.89%
⚡	bench_array2[4]	183.6 ns	154.4 ns	+18.88%
⚡	init_array[4]	183.6 ns	154.4 ns	+18.88%
⚡	sleep_100ms	595.3 ns	566.1 ns	+5.15%
⚡	sleep_100ms_with_custom_sample	595.3 ns	566.1 ns	+5.15%
⚡	sleep_10ms	595.3 ns	566.1 ns	+5.15%
⚡	sleep_1ms	595.3 ns	566.1 ns	+5.15%
⚡	sleep_50ms	595.3 ns	566.1 ns	+5.15%
⚡	recursive[0]	240.3 ns	211.1 ns	+13.82%
⚡	recursive[5]	320.3 ns	291.1 ns	+10.02%
❌	recursive_memoized[BTreeMap<u64, u64>, 0]	371.7 ns	400.8 ns	-7.28%
❌	sleep_100ns	536.9 ns	566.1 ns	-5.15%
❌	sleep_100us	536.9 ns	566.1 ns	-5.15%
❌	sleep_1ms	536.9 ns	566.1 ns	-5.15%
❌	sleep_1ns	536.9 ns	566.1 ns	-5.15%
❌	sleep_1us	536.9 ns	566.1 ns	-5.15%

[codspeed-hq]

CodSpeed WallTime Performance Report

Merging #129 will degrade performances by 68.44%

_{Comparing check-musl-build-in-ci (22e8366) with main (88d41d9)}

Summary

⚡ 18 improvements
❌ 13 regressions
✅ 137 untouched

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	large_drop	347.2 µs	202.2 µs	+71.72%
❌	large_setup	13 ns	15 ns	-13.33%
⚡	iter_batched_large_input	12 ns	7 ns	+71.43%
⚡	iter_batched_per_iteration	48 ns	40 ns	+20%
⚡	iter_batched_ref_large_input	6 ns	5 ns	+20%
⚡	iter_batched_ref_per_iteration	46 ns	41 ns	+12.2%
❌	iter_with_setup	48 ns	50 ns	-4%
⚡	from_elem[2048]	261 ns	245 ns	+6.53%
❌	from_elem[8192]	509 ns	540 ns	-5.74%
⚡	from_elem_decimal[2048]	257 ns	245 ns	+4.9%
⚡	recursive_memoized[BTreeMap<u64, u64>, 20]	2.3 µs	2 µs	+14.12%
⚡	recursive_memoized[BTreeMap<u64, u64>, 5]	220 ns	209 ns	+5.26%
⚡	generate_combinations[5]	1,139 ns	944 ns	+20.66%
❌	generate_combinations[6]	1.9 µs	2 µs	-4.3%
❌	generate_combinations[7]	2.6 µs	3.1 µs	-17.63%
❌	generate_combinations[9]	5.3 µs	7.5 µs	-29.65%
⚡	generate_parentheses[3]	3 µs	2.9 µs	+3.74%
❌	generate_parentheses[4]	7.5 µs	8 µs	-6.74%
⚡	hamiltonian_cycle[4]	806 ns	773 ns	+4.27%
⚡	hamiltonian_cycle[7]	1.3 µs	1.1 µs	+18.77%
...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.