feat: try riscv64

[mayeut]

see https://discuss.python.org/t/packaging-support-for-riscv64/58475/9

[Copilot]

Pull Request Overview

Adds initial riscv64 support across packaging scripts, multi-arch deployment, and CI workflows.

• Extend finalize.sh to handle riscv64-specific tool installs
• Update deploy_multiarch.sh to include riscv64 in image and architecture lists
• Modify GitHub Actions matrix to build and QEMU-emulate riscv64 with manylinux_2_35

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
docker/build_scripts/finalize.sh	Handle riscv64 in auditwheel tool installation cases
deploy_multiarch.sh	Add manylinux_2_35 and include riscv64 in IMAGES and ARCHS
.github/workflows/build.yml	Extend build matrix with riscv64, update QEMU setup condition

Comments suppressed due to low confidence (1)

.github/workflows/build.yml:87

• [nitpick] The QEMU step now applies to both s390x and riscv64 platforms. Consider renaming the step (e.g., "Set up QEMU for multi-arch") or updating its comment to reflect the expanded scope.

      - name: Set up QEMU

[Copilot]

Hard-coding patchelf==0.17.2.1 reduces flexibility when bumping versions. Consider installing the tool via the same --require-hashes flow (e.g., use ${TOOL_PATH}) or centralize the version in a variable.

Suggested change

	pipx install patchelf==0.17.2.1
	pipx install "patchelf==${PATCHELF_VERSION}"

[Copilot]

The manylinux_2_31 and manylinux_2_35 cases share identical ARCHS. You can combine them into one pattern (manylinux_2_31|manylinux_2_35) to reduce duplication.

Suggested change

	manylinux_2_31) ARCHS=("armv7l" "riscv64");;
	manylinux_2_35) ARCHS=("armv7l" "riscv64");;
	manylinux_2_31|manylinux_2_35) ARCHS=("armv7l" "riscv64");;