Use cache in CI

Author: cffls

.github/workflows/main.yml

@@ -17,13 +17,14 @@ jobs:
         python-version: [3.7, 3.8, 3.9, '3.10']
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+      - name: Install poetry
+        run: pipx install poetry
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}
-      - name: Python Poetry Action
-        uses: abatilo/[email protected]
+          cache: 'poetry'
       - name: Install dependencies
         run: |
           poetry install
@@ -42,16 +43,18 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ ubuntu-latest]
+        os: [ubuntu-latest]
+        python-version: [3.9]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+      - name: Install poetry
+        run: pipx install poetry
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}
-      - name: Python Poetry Action
-        uses: abatilo/[email protected]
+          cache: 'poetry'
 
       - name: Run integration tests
         run: |