Update package-checks.yml

Author: jonashaag

.github/workflows/package-checks.yml

@@ -67,15 +67,13 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Python
-        uses: mamba-org/provision-with-micromamba@v15
+        uses: mamba-org/setup-micromamba@v1
         with:
-          environment-file: false
           environment-name: recipe-test
-          extra-specs: |
+          extra-specs: >-
             python=${{ matrix.python-version }}
             boa
             conda-verify
-          channels: conda-forge
           cache-downloads: true
           cache-env: true