Bump mamba-org/setup-micromamba from 1.8.1 to 1.9.0 (#713)

Bumps [mamba-org/setup-micromamba](https://github.com/mamba-org/setup-micromamba) from 1.8.1 to 1.9.0.
- [Release notes](https://github.com/mamba-org/setup-micromamba/releases)
- [Commits](mamba-org/setup-micromamba@v1.8.1...v1.9.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/deploy.yml

@@ -29,7 +29,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup Micromamba
-        uses: mamba-org/setup-micromamba@v1.8.1
+        uses: mamba-org/setup-micromamba@v1.9.0
         with:
           environment-file: environment.yml
           cache-downloads: true