CI: (deps): Bump mamba-org/setup-micromamba

Bumps [mamba-org/setup-micromamba](https://github.com/mamba-org/setup-micromamba) from 1 to 2.
- [Release notes](https://github.com/mamba-org/setup-micromamba/releases)
- [Commits](mamba-org/setup-micromamba@v1...v2)

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

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

.github/actions/install-conda/action.yml

@@ -11,7 +11,7 @@ runs:
   using: composite
   steps:
     - name: Set up Python ${{ inputs.python-version }}
-      uses: mamba-org/setup-micromamba@v1
+      uses: mamba-org/setup-micromamba@v2
       with:
         environment-name: CI
         create-args: python=${{ inputs.python-version }}