ci: use ubuntu image to run all jobs

.github/workflows/pypi.yaml

@@ -1,22 +1,32 @@
 name: Publish package to PyPi
 on: [ push ]
 jobs:
-
   lint:
     name: Lint
-    runs-on: python:3.7.4
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master
+      - name: Set up Python 3.10
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.10'
+          cache: 'pip'
+      - uses: actions/checkout@master
       - name: Install flake8
         run: pip install flake8
       - name: Run lints
         run: flake8 airflow_dbt/ tests/ setup.py
 
   test:
     name: Test
-    runs-on: python:3.7.4
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master
+      - name: Set up Python 3.10
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.10'
+          cache: 'pip'
       - name: Install deps and pytest
         run: pip install --progress-bar off --user . pytest
       - name: Run tests
@@ -28,9 +38,10 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Set up Python 3.10
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v4
         with:
           python-version: '3.10'
+          cache: 'pip'
       - name: Install pypa/build
         run: pip install build --user
       - name: Build a binary wheel and a source tarball