Bump abatilo/actions-poetry from 3 to 4 (#251)

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
...

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -54,7 +54,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
 
       - name: Set up Poetry
-        uses: abatilo/actions-poetry@v3
+        uses: abatilo/actions-poetry@v4
         with:
           poetry-version: 1.8