Bump mamba-org/setup-micromamba in the github-actions group (#299)

Bumps the github-actions group with 1 update: [mamba-org/setup-micromamba](https://github.com/mamba-org/setup-micromamba).


Updates `mamba-org/setup-micromamba` from 2.0.4 to 2.0.5
- [Release notes](https://github.com/mamba-org/setup-micromamba/releases)
- [Commits](mamba-org/setup-micromamba@v2.0.4...v2.0.5)

---
updated-dependencies:
- dependency-name: mamba-org/setup-micromamba
  dependency-version: 2.0.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/build-ultraplot.yml

@@ -26,7 +26,7 @@ jobs:
         with:
           fetch-depth: 0
 
-      - uses: mamba-org/setup-micromamba@v2.0.4
+      - uses: mamba-org/setup-micromamba@v2.0.5
         with:
           environment-file: ./environment.yml
           init-shell: bash
@@ -59,7 +59,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: mamba-org/setup-micromamba@v2.0.4
+      - uses: mamba-org/setup-micromamba@v2.0.5
         with:
           environment-file: ./environment.yml
           init-shell: bash