Bump abatilo/actions-poetry from 3 to 4 (#96)

Bumps [abatilo/actions-poetry](https://github.com/abatilo/actions-poetry) from 3 to 4.
- [Release notes](https://github.com/abatilo/actions-poetry/releases)
- [Changelog](https://github.com/abatilo/actions-poetry/blob/master/.releaserc)
- [Commits](abatilo/actions-poetry@v3...v4)

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

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

Author: dependabot[bot]

.github/workflows/python-app.yml

@@ -34,7 +34,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install Poetry ${{ matrix.poetry-version }}
-        uses: abatilo/actions-poetry@v3
+        uses: abatilo/actions-poetry@v4
         with:
           poetry-version: ${{ matrix.poetry-version }}
       - name: Setup a local virtual environment

.github/workflows/python-publish.yml

@@ -27,7 +27,7 @@ jobs:
         with:
           python-version: '3.x'
       - name: Install Poetry
-        uses: abatilo/actions-poetry@v3
+        uses: abatilo/actions-poetry@v4
         with:
           poetry-version: 1.5.1
       - name: Build package