Update stdlib/toolchain/CompatibilitySpan/CMakeLists.txt

Co-authored-by: Eric Miotto <[email protected]>

Author: glessard

stdlib/toolchain/CompatibilitySpan/CMakeLists.txt

@@ -6,8 +6,8 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND DEFINED SWIFT_STDLIB_LIBRARY_BUILD_TY
   # DEPLOYMENT_VERSION_MACCATALYST ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_MACCATALYST}
   # but the underlying logic takes the deployment version from the cache instead
   # so for now we override those values locally
-  set(SWIFT_DARWIN_DEPLOYMENT_VERSION_OSX ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_OSX})
-  set(SWIFT_DARWIN_DEPLOYMENT_VERSION_MACCATALYST ${COMPATIBILITY_MINIMUM_DEPLOYMENT_VERSION_MACCATALYST})
+  set(SWIFT_DARWIN_DEPLOYMENT_VERSION_OSX "10.14.4")
+  set(SWIFT_DARWIN_DEPLOYMENT_VERSION_MACCATALYST "13.1")
 
   add_swift_target_library("${library_name}" ${SWIFT_STDLIB_LIBRARY_BUILD_TYPES} IS_STDLIB
     FakeStdlib.swift