Update Poetry to version 2.2.1 in CI workflow

.github/workflows/main.yml

@@ -5,6 +5,9 @@ on:
   pull_request:
   workflow_dispatch:
 
+env:
+  POETRY_VERSION: "2.2.1"
+
 jobs:
   build:
     name: Build package
@@ -15,15 +18,14 @@ jobs:
         uses: actions/setup-python@v5
         with:
           cache: "pip"
-      - name: Install pypa/build
-        run: >-
-          python3 -m pip install --user
-          build
-          twine
+      - name: Install poetry
+        run: python3 -m pip install poetry==${{ env.POETRY_VERSION }}
+      - name: Install build dependencies
+        run: poetry install --only build
       - name: Build a binary wheel and a source tarball
-        run: python3 -m build
+        run: poetry run python -m build
       - name: Check the distribution files with `twine`
-        run: twine check --strict dist/*
+        run: poetry run twine check --strict dist/*
       - name: Upload artifact
         id: artifact-upload-step
         uses: actions/upload-artifact@v4
@@ -36,6 +38,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: build
     strategy:
+      fail-fast: false
       matrix:
         include:
           - python-version: "3.9"
@@ -70,7 +73,8 @@ jobs:
 
       - name: Install poetry
         run: |
-          python -m pip install poetry==2.0.0
+          # When upgrading poetry, remember to upgrade poetry-core in `pyproject.toml` (`build-system.requires`)
+          python -m pip install poetry==${{ env.POETRY_VERSION }}
 
       - name: Configure poetry
         run: |