Bump mamba-org/setup-micromamba from 1 to 2 (#92)

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

.github/workflows/unit-test.yaml

@@ -77,7 +77,7 @@ jobs:
           submodules: true
           ref: ${{ env.HOOMD_BLUE_VERSION }}
       - name: Create Python Environment
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-name: test
           environment-file: hoomd-blue/.github/workflows/environments/py312-conda-lock.yml