Release latest

To upgrade to this Python binary package run:
pip install --upgrade --pre simpleitk --find-links https://github.com/SimpleITK/SimpleITK/releases/tag/latest

What's Changed

• Update Superbuild SWIG version to 4.3.1 by @blowekamp in #2279
• Use CodeBuild runners in nightly. by @blowekamp in #2280
• Json tweaks by @blowekamp in #2282
• Add Clion default build paths and venvs to gitignore by @blowekamp in #2285
• Address compilation error when building ruby on OSX by @blowekamp in #2287
• Use target compile options over source properties by @blowekamp in #2288
• Add permision restriction to actions by @blowekamp in #2284
• use nullptr by @blowekamp in #2290

Full Changelog: v2.5.0...latest