Bump abatilo/actions-poetry from 2 to 3

Bumps [abatilo/actions-poetry](https://github.com/abatilo/actions-poetry) from 2 to 3.
- [Release notes](https://github.com/abatilo/actions-poetry/releases)
- [Changelog](https://github.com/abatilo/actions-poetry/blob/master/.releaserc)
- [Commits](abatilo/actions-poetry@v2...v3)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/test.yml

@@ -32,7 +32,7 @@ jobs:
       with:
         python-version: '3.x'
     - name: Install poetry
-      uses: abatilo/actions-poetry@v2
+      uses: abatilo/actions-poetry@v3
     - name: Run tests
       run: |
         poetry run coverage run --branch tests.py -b

action.yml

@@ -26,7 +26,7 @@ runs:
       with:
         python-version: '3.x'
     - name: Install poetry
-      uses: abatilo/actions-poetry@v2
+      uses: abatilo/actions-poetry@v3
     - name: Install dependencies
       shell: bash
       working-directory: ./landscape-tools