Bump mamba-org/setup-micromamba from 3.1.0 to 3.2.1

Bumps [mamba-org/setup-micromamba](https://github.com/mamba-org/setup-micromamba) from 3.1.0 to 3.2.1.
- [Release notes](https://github.com/mamba-org/setup-micromamba/releases)
- [Commits](mamba-org/setup-micromamba@ce51e99...f457c30)

---
updated-dependencies:
- dependency-name: mamba-org/setup-micromamba
  dependency-version: 3.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/conda.yml

@@ -78,7 +78,7 @@ jobs:
         - name: Checkout
           uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
-        - uses: mamba-org/setup-micromamba@ce51e99f4bb8a82ab7158c4dc59ef4634c59c4f9 # v3.1.0
+        - uses: mamba-org/setup-micromamba@f457c30a868e4760d3a6fcea5f25dc655b8edf39 # v3.2.1
           with:
             micromamba-version: '2.3.2-0'
             environment-file: conda/dev-environment-unix.yml
@@ -90,7 +90,7 @@ jobs:
             post-cleanup: 'none'
           if: ${{ runner.os != 'Windows' }}
 
-        - uses: mamba-org/setup-micromamba@ce51e99f4bb8a82ab7158c4dc59ef4634c59c4f9 # v3.1.0
+        - uses: mamba-org/setup-micromamba@f457c30a868e4760d3a6fcea5f25dc655b8edf39 # v3.2.1
           with:
             micromamba-version: '2.3.2-0'
             environment-file: conda/dev-environment-win.yml