Bump version to 2.28.0

Executed ./scripts/bump_version.sh --version 2.28.0 --so-tls 14

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index 0cafd88..0a60067 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -203,15 +203,15 @@
 
 if(USE_SHARED_MBEDTLS_LIBRARY)
     add_library(${mbedcrypto_target} SHARED ${src_crypto})
-    set_target_properties(${mbedcrypto_target} PROPERTIES VERSION 2.27.0 SOVERSION 7)
+    set_target_properties(${mbedcrypto_target} PROPERTIES VERSION 2.28.0 SOVERSION 7)
     target_link_libraries(${mbedcrypto_target} PUBLIC ${libs})
 
     add_library(${mbedx509_target} SHARED ${src_x509})
-    set_target_properties(${mbedx509_target} PROPERTIES VERSION 2.27.0 SOVERSION 1)
+    set_target_properties(${mbedx509_target} PROPERTIES VERSION 2.28.0 SOVERSION 1)
     target_link_libraries(${mbedx509_target} PUBLIC ${libs} ${mbedcrypto_target})
 
     add_library(${mbedtls_target} SHARED ${src_tls})
-    set_target_properties(${mbedtls_target} PROPERTIES VERSION 2.27.0 SOVERSION 13)
+    set_target_properties(${mbedtls_target} PROPERTIES VERSION 2.28.0 SOVERSION 14)
     target_link_libraries(${mbedtls_target} PUBLIC ${libs} ${mbedx509_target})
 endif(USE_SHARED_MBEDTLS_LIBRARY)