Update CI actions versions. (#134)

Author: devrimcavusoglu

Diff for: .github/workflows/ci.yml

@@ -17,31 +17,31 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
 
       - name: Restore Ubuntu cache
-        uses: actions/cache@v1
+        uses: actions/cache@v3
         if: matrix.operating-system == 'ubuntu-latest'
         with:
           path: ~/.cache/pip
           key: ${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('**/setup.py')}}
           restore-keys: ${{ matrix.os }}-${{ matrix.python-version }}-
 
       - name: Restore MacOS cache
-        uses: actions/cache@v1
+        uses: actions/cache@v3
         if: matrix.operating-system == 'macos-latest'
         with:
           path: ~/Library/Caches/pip
           key: ${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('**/setup.py')}}
           restore-keys: ${{ matrix.os }}-${{ matrix.python-version }}-
 
       - name: Restore Windows cache
-        uses: actions/cache@v1
+        uses: actions/cache@v3
         if: matrix.operating-system == 'windows-latest'
         with:
           path: ~\AppData\Local\pip\Cache