We now test the new APIs using GitHub Actions on macOS 11 + Xcode 13.2. Once BUILD-14630 is complete we should move this testing to Evergreen instead. This will require us to do
As part of this we should remove the manual setting of the DYLD_LIBRARY_PATH in configure-swift.sh. That is used to work around the fact that the default path, which is that for the Swift version bundled with Xcode, does not have the concurrency library available as it is too old.