ci: run coverage with only 1 thread

[AzHicham]

No description provided.

[github-actions]

philips-isyntax-rs Benchmark

Benchmark suite	Current: 165c18e	Previous: 85c37a4	Ratio
philips_i2syntax_read_region_256_lvl_0	1355353 ns/iter (± 82539)	1389032 ns/iter (± 79843)	0.98
philips_i2syntax_read_region_256_lvl_1	1158877 ns/iter (± 50545)	1156211 ns/iter (± 34369)	1.00
philips_i2syntax_read_region_512_lvl_0	1640558 ns/iter (± 139278)	1694506 ns/iter (± 82412)	0.97
philips_i2syntax_read_region_512_lvl_1	7392552 ns/iter (± 274873)	7430364 ns/iter (± 265940)	0.99
philips_read_region_256_lvl_0	503426 ns/iter (± 36839)	515438 ns/iter (± 42131)	0.98
philips_read_region_256_lvl_1	1246352 ns/iter (± 52284)	1255684 ns/iter (± 45033)	0.99
philips_read_region_512_lvl_0	3539281 ns/iter (± 197915)	3542377 ns/iter (± 144715)	1.00
philips_read_region_512_lvl_1	2749958 ns/iter (± 140005)	2773910 ns/iter (± 364316)	0.99

This comment was automatically generated by workflow using github-action-benchmark.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.02%. Comparing base (85c37a4) to head (165c18e).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #160   +/-   ##
========================================
  Coverage    91.02%   91.02%           
========================================
  Files            8        8           
  Lines          568      568           
========================================
  Hits           517      517           
  Misses          51       51           

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