Bump conda-incubator/setup-miniconda from 2.1.1 to 3.1.0

Bumps [conda-incubator/setup-miniconda](https://github.com/conda-incubator/setup-miniconda) from 2.1.1 to 3.1.0.
- [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@v2.1.1...v3.1.0)

---
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]>

Author: dependabot[bot]

.github/workflows/book.yml

@@ -15,7 +15,7 @@ jobs:
         python-version: 3.9
 
     - name: Setup Miniconda
-      uses: conda-incubator/setup-miniconda@v2.1.1
+      uses: conda-incubator/setup-miniconda@v3.1.0
       with:
         environment-file: environment.yml
         activate-environment: python-fortran