Added zstd as a dependency library

On some platforms OpenSSL is build with 'zstd' and therefore we need to add this
library to the dependency list.

Author: percona-ysorokin

CMakeLists.txt

@@ -79,6 +79,8 @@ find_package(MySQL REQUIRED)
 find_package(ZLIB REQUIRED)
 find_package(AWSSDK 1.11.570 EXACT REQUIRED COMPONENTS s3-crt)
 
+find_package(zstd REQUIRED)
+
 set(source_files
   # main application files
   src/app.cpp
@@ -402,6 +404,7 @@ target_link_libraries(binlog_server
     ZLIB::ZLIB
     MySQL::client
     aws-cpp-sdk-s3-crt
+    zstd::libzstd_shared
 )
 # for some reason it is not possible to propagate CXX_EXTENSIONS and
 # CXX_STANDARD_REQUIRED via interface library (binlog_server_compiler_flags)