Bump LLVM to 13.0.0 for android builds
context
- we want to use LLVM version 13.0.0 for android builds (as it is the latest version and is what mozilla uses upstream for geckoview)
- however: we are unable to build geckoview v96.0.x if we do so, b/c
clang_rt
errors, as per: !405 (comment 2776669)
- for the purposes of !406 (merged) , we reverted to 12.0.0 for nightly, but want to resolve 13.0.0
before tagging next alpha release (11.5a5)
changes
- use llvm v13.0.0 (with
git_hash: d7b669b3a30345cfcdb2fde2af6f48aa4b94845d
) in projects/llvm-project/config.targets.android