1.5.9

Bug fixes:

• [libmamba] backport of #3424: Execute remove action before install actions by @JohanMabille
  in https://github.com/mamba-org/mamba/pull/3425/files
• [mamba] Fix Conda nightly tests by @Hind-M in #3420

CI

• [mamba, micromamba] Fix tests by @Hind-M in https://github.com/mamba-org/mamba/pull/3347/files