Bump mamba-org/setup-micromamba from 1 to 2

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](https://github.com/mamba-org/setup-micromamba/compare/v1...v2)

---
updated-dependencies:
- dependency-name: mamba-org/setup-micromamba
  dependency-version: '2'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci-ifcopenshell-conda-cleaner.yml

@@ -24,7 +24,7 @@ jobs:
     if: |
       github.repository == 'IfcOpenShell/IfcOpenShell'
     steps:
-      - uses: mamba-org/setup-micromamba@v1 # https://github.com/mamba-org/setup-micromamba
+      - uses: mamba-org/setup-micromamba@v2 # https://github.com/mamba-org/setup-micromamba
         with:
           environment-name: test-env
           create-args: >-