ci: try using pipx for poetry install

.github/workflows/ci.yml

@@ -71,61 +71,15 @@ jobs:
       with:
         python-version: ${{ env.PYTHON_VERSION }}
 
-    - name: Cache Poetry Install
-      id: cache-poetry
-      uses: actions/cache@v4
-      with:
-        path: |
-          ~/.cache/pypoetry
-          .venv
-          ${{ runner.os == 'windows-latest' && 'C:\\opt\\poetry' || (runner.os == 'macos-latest' && '$HOME/.poetry') || '/opt/poetry' }}
-        key: ${{ matrix.os }}-poetry-${{ hashFiles('**/poetry.lock') }}-${{ hashFiles('**/pyproject.toml')
-          }}
-
-    - name: Install Poetry on macOS
-      if: steps.cache-poetry.outputs.cache-hit != 'true' && runner.os == 'macOS'
-      run: |
-        export POETRY_HOME=$HOME/.poetry
-        python3 -m venv $POETRY_HOME
-        $POETRY_HOME/bin/pip install poetry==1.8.2
-        $POETRY_HOME/bin/poetry --version
-      shell: bash
-
-    - name: Install Poetry on Linux/macOS
-      if: steps.cache-poetry.outputs.cache-hit != 'true' &&  runner.os == 'Linux'
-      run: |
-        if [ $RUNNER_OS = 'macOS' ]; then
-          export POETRY_HOME=$HOME/.poetry
-          python3 -m venv $POETRY_HOME
-          $POETRY_HOME/bin/pip install poetry==1.8.2
-          $POETRY_HOME/bin/poetry --version
-        else
-          export POETRY_HOME=/opt/poetry
-          python3 -m venv $POETRY_HOME
-          $POETRY_HOME/bin/pip install poetry==1.8.2
-          $POETRY_HOME/bin/poetry --version
-        fi
-
-    - name: Install Poetry on Windows
-      if: steps.cache-poetry.outputs.cache-hit != 'true' && runner.os == 'Windows'
-      shell: pwsh
-      run: |
-        curl -sSL https://install.python-poetry.org | python -
-
-    - name: Add Poetry to PATH
-      if: runner.os == 'Linux' || runner.os == 'macOS'
+    - name: Install pipx
       run: |
-        if [ $RUNNER_OS = 'Linux' ]; then
-          echo "/opt/poetry/bin" >> $GITHUB_PATH
-        elif [ $RUNNER_OS = 'macOS' ]; then
-          echo "$HOME/.poetry/bin" >> $GITHUB_PATH
-        fi
+        python3 -m pip install --upgrade pip
+        python3 -m pip install pipx
+        python3 -m pipx ensurepath
 
-    - name: Add Poetry to PATH
-      if: runner.os == 'Windows'
+    - name: Install Poetry
       run: |
-        echo "C:\\opt\\poetry\\Scripts" >> $GITHUB_PATH
-        echo "$env:USERPROFILE\\.poetry\\bin" >> $env:GITHUB_PATH
+        pipx install poetry
 
     - name: Install Package
       run: poetry install --no-interaction --no-ansi