Bump clang version to 16 for cmake build (#10715)

Author: alexv-smirnov

clang.toolchain

@@ -1,5 +1,5 @@
-set(CMAKE_C_COMPILER clang-14)
-set(CMAKE_CXX_COMPILER clang++-14)
+set(CMAKE_C_COMPILER clang-16)
+set(CMAKE_CXX_COMPILER clang++-16)
 set(CMAKE_EXE_LINKER_FLAGS "-fuse-ld=lld -rdynamic")
 set(CMAKE_SHARED_LINKER_FLAGS "-fuse-ld=lld")
 set(CMAKE_C_STANDARD_LIBRARIES "-lc -lm")
@@ -12,5 +12,5 @@ endif()
 set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3 -UNDEBUG"  CACHE STRING "C compiler flags")
 set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 -UNDEBUG" CACHE STRING "C++ compiler flags")
 
-set(ENV{CC} clang-14)
-set(ENV{CXX} clang++-14)
+set(ENV{CC} clang-16)
+set(ENV{CXX} clang++-16)