fix: python builds (#90)

This one's obscure

Author: gadomski

.github/workflows/python.yml

@@ -38,6 +38,9 @@ jobs:
           python-version: 3.x
       - name: Build wheels
         uses: PyO3/maturin-action@v1
+        env:
+          # https://github.com/rust-lang/stacker/issues/79#issuecomment-1497479267
+          CFLAGS_s390x_unknown_linux_gnu: -march=z10
         with:
           target: ${{ matrix.platform.target }}
           args: --release --out dist --find-interpreter