v1.21.0
Use custom script for hosted mac runner
CI: build target all/package in compiler-warnings jobs
Add a comma to copyright string
Add missing copyright notes to workflows
CI: added GA build and test jobs with LLVM 16
Add missing dependency in LLVM rebuild workflows
Use LLVM 15.0.7 in CI
Use LLVM 16.0.6 when building 16.0
Enable ASAN for lit_tests and run_tests
CI: add job to publish the release snap