ci: fix Linux wheel build with --find-interpreter

Maturin inside the manylinux container needs --find-interpreter to
discover the Python versions available in the container.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: mrecachinas

.github/workflows/pythonpackage.yml

@@ -90,7 +90,7 @@ jobs:
         uses: PyO3/maturin-action@v1
         with:
           target: ${{ matrix.target }}
-          args: --release --out dist
+          args: --release --out dist --find-interpreter
           manylinux: auto
           before-script-linux: |
             # Install Rust in manylinux container