CI: Test on Python 3.9 and 3.10 (#574)

* CI: Test on Python 3.9 and 3.10

* Update tests.yml

* Update tox.ini

Co-authored-by: Bartosz Sokorski <b.sokorski@gmail.com>

Author: hugovk

.github/workflows/release.yml

@@ -20,7 +20,7 @@ jobs:
       run: |
         make linux_release
     - name: Upload distributions artifacts
-      uses: actions/upload-artifact@v1
+      uses: actions/upload-artifact@v2
       with:
         name: pendulum-dist
         path: dist/wheelhouse
@@ -38,7 +38,7 @@ jobs:
       run: |
         echo ::set-output name=tag::${GITHUB_REF#refs/tags/}
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install and set up Poetry
@@ -49,7 +49,7 @@ jobs:
         source $HOME/.poetry/env
         poetry build -vvv
     - name: Upload distribution artifacts
-      uses: actions/upload-artifact@v1
+      uses: actions/upload-artifact@v2
       with:
         name: pendulum-dist
         path: dist
@@ -68,7 +68,7 @@ jobs:
       run: |
         echo ::set-output name=tag::${GITHUB_REF#refs/tags/}
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install and setup Poetry
@@ -79,7 +79,7 @@ jobs:
         $env:Path += ";$env:Userprofile\.poetry\bin"
         poetry build -vvv
     - name: Upload distribution artifact
-      uses: actions/upload-artifact@v1
+      uses: actions/upload-artifact@v2
       with:
         name: pendulum-dist
         path: dist
@@ -104,7 +104,7 @@ jobs:
         run: |
           curl -fsS https://install.python-poetry.org | python - --preview -y
       - name: Set up cache
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: .venv
           key: venv-${{ runner.os }}-${{ steps.full-python-version.outputs.version }}-${{ hashFiles('**/poetry.lock') }}