Fix ci for pipenv and reduce test matrix (actions#323)

Author: dmitry-shibanov

.github/workflows/e2e-cache.yml

@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ['3.7', '3.8', '3.9', 'pypy-3.7-v7.3.5', 'pypy-3.7-v7.x']
+        python-version: ['3.8', '3.9', 'pypy-3.7-v7.x']
     steps:
       - uses: actions/checkout@v2
       - name: Setup Python
@@ -39,18 +39,18 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ['3.7', '3.8', '3.9', 'pypy-3.7-v7.3.5', 'pypy-3.7-v7.x']
+        python-version: ['3.8', '3.9', 'pypy-3.7-v7.x']
     steps:
       - uses: actions/checkout@v2
-      - name: Install pipenv
-        run: pipx install pipenv
       - name: Setup Python
         uses: ./
         with:
           python-version: ${{ matrix.python-version }}
           cache: 'pipenv'
+      - name: Install pipenv
+        run: pipx install pipenv
       - name: Install dependencies
-        run: pipenv install flake8
+        run: pipenv install numpy
 
   python-pip-dependencies-caching-path:
     name: Test pip (Python ${{ matrix.python-version}}, ${{ matrix.os }})
@@ -59,7 +59,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ['3.7', '3.8', '3.9', 'pypy-3.7-v7.3.5', 'pypy-3.7-v7.x']
+        python-version: ['3.8', '3.9', 'pypy-3.7-v7.x']
     steps:
       - uses: actions/checkout@v2
       - name: Setup Python
@@ -78,16 +78,16 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ['3.7', '3.8', '3.9', 'pypy-3.7-v7.3.5', 'pypy-3.7-v7.x']
+        python-version: ['3.8', '3.9', 'pypy-3.7-v7.x']
     steps:
       - uses: actions/checkout@v2
-      - name: Install pipenv
-        run: pipx install pipenv
       - name: Setup Python
         uses: ./
         with:
           python-version: ${{ matrix.python-version }}
           cache: 'pipenv'
           cache-dependency-path: '**/requirements-linux.txt'
+      - name: Install pipenv
+        run: pipx install pipenv
       - name: Install dependencies
-        run: pipenv install flake8
+        run: pipenv install numpy

.github/workflows/test-python.yml

@@ -97,7 +97,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-10.15, windows-latest, ubuntu-18.04, ubuntu-20.04]
+        os: [macos-10.15, windows-2019, ubuntu-18.04, ubuntu-20.04]
     steps:
     - name: Checkout
       uses: actions/checkout@v2