Try to modernise CI

Author: IAlibay

.github/workflows/gh-ci.yml

@@ -24,22 +24,22 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: [2.7, 3.6, 3.7, 3.8, 3.9]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
         include:
           - os: macOS-latest
-            python-version: 2.7	
+            python-version: "3.9"
           - os: macOS-latest
-            python-version: 3.9
+            python-version: "3.12"
           - os: windows-latest
-            python-version: 2.7	
+            python-version: "3.9"
           - os: windows-latest
-            python-version: 3.9
+            python-version: "3.12"
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Setup python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -55,10 +55,6 @@ jobs:
       run: |
         python -m pip install six setuptools tqdm
 
-    - name: Install compatibility dependencies for Python 2.7 only
-      if: startsWith(matrix.python-version, '2.7')
-      run: python -m pip install pathlib2 
-
     - name: Install package
       run: |
         python -m pip install -e .