fix(ci): do not use actions-rs's cargo action

[jeertmans]

Looks like half@2.6.0 was used cargo, even though its dependent package clearly mentions half@2.2 in its Cargo.toml file...

Fixing this with cargo update half@2.6.0 ver 2.4.0.

[dev-dependencies]
└── codspeed-criterion-compat v2.10.1
    ├── codspeed-criterion-compat-walltime v2.10.1
    │   ├── anes v0.1.6
    │   ├── cast v0.3.0
    │   ├── ciborium v0.2.2
    │   │   ├── ciborium-io v0.2.2
    │   │   ├── ciborium-ll v0.2.2
    │   │   │   ├── ciborium-io v0.2.2
    │   │   │   └── half v2.4.0
    │   │   │       └── cfg-if v1.0.0

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49.11%. Comparing base (c36f20e) to head (af18200).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #483      +/-   ##
==========================================
- Coverage   49.31%   49.11%   -0.21%     
==========================================
  Files          33       33              
  Lines        2054     2079      +25     
==========================================
+ Hits         1013     1021       +8     
- Misses       1041     1058      +17     

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[codspeed-hq]

CodSpeed Performance Report

Merging #483 will not alter performance

_{Comparing fix-ci (af18200) with master (c36f20e)}

Summary

✅ 6 untouched benchmarks