ci: use pip for faster install

.github/workflows/ci.yml

@@ -24,34 +24,18 @@ jobs:
     - uses: actions/checkout@main
       with:
         fetch-depth: 1
-
-    - name: Get Miniconda (Ubuntu)
-      if: matrix.os == 'ubuntu-latest'
-      run: |
-        wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O $HOME/miniconda.sh;
-        bash $HOME/miniconda.sh -b -p $HOME/miniconda
-
-    - name: Get Miniconda (Mac OS)
-      if: matrix.os == 'macos-latest'
-      run: |
-        wget https://repo.continuum.io/miniconda/Miniconda3-latest-MacOSX-x86_64.sh -O $HOME/miniconda.sh;
-        bash $HOME/miniconda.sh -b -p $HOME/miniconda
-
-    - name: Setup Environment
-      run: |
-        export PATH="$HOME/miniconda/bin:$PATH"
-        ./ci/install_conda.sh
+    - name: Setup Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
 
     - name: Install
       run: |
-        export PATH="$HOME/miniconda/bin:$PATH"
-        source activate ${ENV_NAME}
-        pip install .
+        pip install --upgrade pip
+        pip install .[tests]
 
     - name: Run Tests
       run: |
-        export PATH="$HOME/miniconda/bin:$PATH"
-        source activate $ENV_NAME
         pytest --cov-report xml:./coverage.xml
 
     - name: Upload Coverage (Ubuntu)