fix ci

Author: hyunwoongko

Diff for: .github/workflows/test_macos.yaml

@@ -18,7 +18,7 @@ jobs:
           python3 -m pip install --upgrade pip & pip3 install --upgrade setuptools
       - name: Install kss locally
         run: |
-          pip3 install . --ignore-installed six
+          python setup.py install
       - name: Run the test suite
         run: |
           pytest -v

Diff for: .github/workflows/test_ubuntu.yaml

@@ -18,7 +18,7 @@ jobs:
           python3 -m pip install --upgrade pip & pip3 install --upgrade setuptools
       - name: Install kss locally
         run: |
-          pip3 install . --ignore-installed six
+          python setup.py install
       - name: Run the test suite
         run: |
           pytest -v

Diff for: .github/workflows/test_windows.yaml

@@ -18,7 +18,7 @@ jobs:
           python3 -m pip install --upgrade pip & pip3 install --upgrade setuptools
       - name: Install kss locally
         run: |
-          pip3 install . --ignore-installed six
+          python setup.py install
       - name: Run the test suite
         run: |
           pytest -v