Update Runtimes/Core/CMakeLists.txt to 6.2.1

Author: shahmishal

Runtimes/Core/CMakeLists.txt

@@ -54,7 +54,7 @@ if($ENV{BUILD_NUMBER})
 endif()
 project(SwiftCore
   LANGUAGES C CXX Swift
-  VERSION 6.2.0${BUILD_NUMBER})
+  VERSION 6.2.1${BUILD_NUMBER})
 
 # The Swift standard library is not intended for use as a sub-library as part of
 # another project. It is tightly coupled with the compiler version.