Bump conda-incubator/setup-miniconda from 2.2.0 to 3.0.0

Bumps [conda-incubator/setup-miniconda](https://github.com/conda-incubator/setup-miniconda) from 2.2.0 to 3.0.0.
- [Release notes](https://github.com/conda-incubator/setup-miniconda/releases)
- [Changelog](https://github.com/conda-incubator/setup-miniconda/blob/main/CHANGELOG.md)
- [Commits](conda-incubator/setup-miniconda@v2.2.0...v3.0.0)

---
updated-dependencies:
- dependency-name: conda-incubator/setup-miniconda
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/tox-pytest.yml

@@ -16,7 +16,7 @@ jobs:
           fetch-depth: 2
 
       - name: Set up conda environment for testing
-        uses: conda-incubator/setup-miniconda@v2.2.0
+        uses: conda-incubator/setup-miniconda@v3.0.0
         with:
           miniforge-variant: Mambaforge
           miniforge-version: latest