ดาวน์โหลด Micromamba 2.6.1-0

Bug fixes:
- [libmamba] fix: Support local install without explicit path by @jjerphan in https://github.com/mamba-org/mamba/pull/4273
- [micromamba, libmamba] fix: Free-threaded builds location on Windows by @jjerphan in https://github.com/mamba-org/mamba/pull/4268
- [libmamba] fix: Do not use python for platform detection by @jjerphan in https://github.com/mamba-org/mamba/pull/4257
- [libmamba] fix: Adapt Sharded Repodata TTL update logic by @jjerphan in https://github.com/mamba-org/mamba/pull/4269
- [libmamba] fix: Adaptations for vcpkg's distribution of zlib 1.3.2 on Windows by @jjerphan in https://github.com/mamba-org/mamba/pull/4260
- [libmamba] fix: Normalize MatchSpec package names to lowercase by @jjerphan in https://github.com/mamba-org/mamba/pull/4258
- [libmambapy] fix: Adapt add_pip_as_python_dependency python tests by @danyeaw in https://github.com/mamba-org/mamba/pull/4252
- [micromamba, libmamba] fix: Entirely clean cache on clean --all by @jjerphan in https://github.com/mamba-org/mamba/pull/4249
- [libmamba] fix: Normalize MatchSpec's name to lowercase internally by @jjerphan in https://github.com/mamba-org/mamba/pull/4248
CI fixes and doc:
- [all] ci: Remove sedatives by @jjerphan in https://github.com/mamba-org/mamba/pull/4271
Maintenance:
- [libmamba] maint: Remove libxml2 as a dependency by @jjerphan in https://github.com/mamba-org/mamba/pull/4261