fix poetry install in ubuntu 24.04

.gitea/actions/poetrybuild/action.yaml

@@ -13,7 +13,9 @@ runs:
   using: "composite"
   steps:
     - name: Install poetry
-      run: pip install poetry
+      run: pipx install poetry
+    - name: Set PATH
+      run: export PATH="$PATH:~/.local/bin"
     - name: Install poetry package
       run: poetry install --no-interaction ${{ inputs.poetry_install_args }}
       shell: bash