Prepare for 2.6.1 release

[adriangb]

No description provided.

[codecov]

Codecov Report

Merging #901 (272ad34) into main (ce2068f) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #901   +/-   ##
=======================================
  Coverage   93.74%   93.74%           
=======================================
  Files         105      105           
  Lines       15331    15331           
  Branches       25       25           
=======================================
  Hits        14372    14372           
  Misses        953      953           
  Partials        6        6           

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[codspeed-hq]

CodSpeed Performance Report

Merging #901 will improve performances by 31.37%

_{Comparing bump-version-4 (272ad34) with main (ce2068f)}

Summary

🔥 1 improvements
✅ 137 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	bump-version-4	Change
🔥	test_decimal_from_string_core	71.5 µs	54.4 µs	+31.37%