ci: bump actions/setup-python from 2 to 4 (#4)

* ci: bump actions/setup-python from 2 to 4

Update python setup configuration to use the new features ins version 4.

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 2 to 4.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v2...v4)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Signed-off-by: Lucas Roesler <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Lucas Roesler <[email protected]>

Author: dependabot[bot]

.github/workflows/cicd.yaml

@@ -47,7 +47,7 @@ jobs:
         uses: arduino/setup-task@v1
 
       - name: Setup Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: 3.9
 
@@ -83,16 +83,14 @@ jobs:
       - name: Setup Task
         uses: arduino/setup-task@v1
 
+      # based on https://github.com/actions/setup-python/blob/main/docs/advanced-usage.md#caching-packages
+      - name: Install poetry
+        run: pipx install poetry
       - name: Setup Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
-          python-version: 3.9
-
-      - uses: Gr1N/setup-poetry@v8
-      - uses: actions/cache@v2
-        with:
-          path: ~/.cache/pypoetry/virtualenvs
-          key: ${{ runner.os }}-poetry-${{ hashFiles('poetry.lock') }}
+          python-version-file: ".python-version"
+          cache: poetry
 
       - name: Setup package
         run: task setup

.python-version

@@ -0,0 +1 @@
+3.9.7