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](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/workflows/CI.yaml

@@ -37,7 +37,7 @@ jobs:
 
       - name: Install with OpenEye Toolkits
         if: ${{ matrix.openeye == true }}
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           micromamba-binary-path: ~/.local/bin/micromamba
           environment-file: devtools/conda-envs/test-env.yaml
@@ -47,7 +47,7 @@ jobs:
 
       - name: Install with AmberTools
         if: ${{ matrix.openeye == false }}
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           micromamba-binary-path: ~/.local/bin/micromamba
           environment-file: devtools/conda-envs/no_openeye.yaml

.github/workflows/installer.yml

@@ -28,7 +28,7 @@ jobs:
     - uses: actions/checkout@v4
 
     - name: Install conda environment
-      uses: mamba-org/setup-micromamba@v1
+      uses: mamba-org/setup-micromamba@v2
       with:
         environment-file: devtools/conda-envs/installer.yaml
         create-args: >-