Python support 3.11

[s0l0ist]

Description

Closes: #198

This PR adds support for Python 3.11. It also supports arm64 builds for MacOS. Future PRs can include arm builds for Linux once Github provides ARM runners for Ubuntu.

Python 3.12 is currently failing to build on M1 Mac with a segfault. It is not clear where the issue resides (CPython, pybind11, or some other upstream dependency). It may build on Linux, but I have not tested it. I think it is safe to omit Python 3.12 support until another future PR.

To support these changes, the repository was migrated from Bazel 6 which used a WORKSPACE to Bazel 7 with bzlmod. The only remaining workspace artifacts exist to support the emsdk repository which does not support bzlmod.

There are hermetic python versions used for testing different versions. This greatly simplifies testing locally different supported python versions. The caveat is that it installs the 'latest' patch version and therefore is not an exhaustive test for the specific runtime. Publishing wheels depends on the locally installed python version as I wasn't able to hook up a specific python toolchain to py_wheel. This is reflected in the CD.yml file which installs multiple python versions for publishing distributions.

Affected Dependencies

• There's no longer a minimum version bound on the protobuf requirement in python.

How has this been tested?

CI should pass, but in summary:

• Cpp
  • bazel test --test_output=all //private_set_intersection/cpp/...
• C
  • bazel test --test_output=all //private_set_intersection/c/...
• Golang
  • bazel test --test_output=all //private_set_intersection/go/...
• Rust
  • bazel test --test_output=all //private_set_intersection/rust/...
• Python
  • bazel test --test_output=all //private_set_intersection/python:test_3_8
  • bazel test --test_output=all //private_set_intersection/python:test_3_9
  • bazel test --test_output=all //private_set_intersection/python:test_3_10
  • bazel test --test_output=all //private_set_intersection/python:test_3_11
• Javascript
  • npm i
  • npm run build
  • npm run build:proto
  • npm run compile
  • npm run test

Checklist

• I have followed the Contribution Guidelines and Code of Conduct
• I have commented my code following the OpenMined Styleguide
• I have labeled this PR with the relevant Type labels
• My changes are covered by tests