Fix missing conda installation

Author: birgits

.github/workflows/tests-coverage.yml

@@ -40,17 +40,17 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Install dependencies (Linux)
-        if: runner.os == 'Linux'
+      - name: Set up Conda
+        if: runner.os == 'Windows'
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          miniconda-version: "latest"
+          python-version: ${{ matrix.python-version }}
+          activate-environment: testenv
+
+      - name: Install dependencies
         run: |
           python -m pip install --upgrade pip wheel setuptools
-          pip install .[dev]
-
-      - name: Install dependencies (Windows)
-        if: runner.os == 'Windows'
-        run:
-          conda create -n testenv python=${{ matrix.python }}
-          conda activate testenv
           python -m pip install .[dev]
 
       - name: Run tests