Installing poetry

Author: joke1196

.github/workflows/build.yml

@@ -18,6 +18,10 @@ jobs:
       contents: write
     steps:
       - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
+      - name: "Install poetry"
+        with:
+          script: |
+            mise install poetry
       - uses: SonarSource/ci-github-actions/build-poetry@v1
         with:
           sonar-platform: none
@@ -37,6 +41,7 @@ jobs:
       - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
         with:
           script: |
+            mise install poetry
             poetry run black src/ tests/ --check
             poetry run licenseheaders -t license_header.tmpl -o "SonarSource SA" -y 2011-2024 -n "Sonar Scanner Python" -E .py -d src/
             poetry run licenseheaders -t license_header.tmpl -o "SonarSource SA" -y 2011-2024 -n "Sonar Scanner Python" -E .py -d tests/