Bump mamba-org/setup-micromamba

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] <support@github.com>

{{cookiecutter.project_name}}/.github/workflows/on-push.yml

@@ -66,7 +66,7 @@ jobs:
     - name: Get current date
       id: date
       run: echo "date=$(date +%Y-%m-%d)" >> "${GITHUB_OUTPUT}"
-    - uses: mamba-org/setup-micromamba@v1
+    - uses: mamba-org/setup-micromamba@v2
       with:
         environment-file: ci/combined-environment-ci.yml
         environment-name: DEVELOP
@@ -95,7 +95,7 @@ jobs:
     - name: Get current date
       id: date
       run: echo "date=$(date +%Y-%m-%d)" >> "${GITHUB_OUTPUT}"
-    - uses: mamba-org/setup-micromamba@v1
+    - uses: mamba-org/setup-micromamba@v2
       with:
         environment-file: ci/combined-environment-ci.yml
         environment-name: DEVELOP
@@ -124,7 +124,7 @@ jobs:
     - name: Get current date
       id: date
       run: echo "date=$(date +%Y-%m-%d)" >> "${GITHUB_OUTPUT}"
-    - uses: mamba-org/setup-micromamba@v1
+    - uses: mamba-org/setup-micromamba@v2
       with:
         environment-file: ci/combined-environment-ci.yml
         environment-name: DEVELOP
@@ -161,7 +161,7 @@ jobs:
     - name: Get current date
       id: date
       run: echo "date=$(date +%Y-%m-%d)" >> "${GITHUB_OUTPUT}"
-    - uses: mamba-org/setup-micromamba@v1
+    - uses: mamba-org/setup-micromamba@v2
       with:
         environment-file: ci/combined-environment${{ '{{ matrix.extra }}' }}.yml
         environment-name: DEVELOP${{ '{{ matrix.extra }}' }}