MDEV-13514 fix compilation for aws_key_management plugin

plugin/aws_key_management/CMakeLists.txt

@@ -138,6 +138,7 @@ ELSE()
     "-DCMAKE_CXX_FLAGS_MINSIZEREL=${CMAKE_CXX_FLAGS_MINSIZEREL} ${PIC_FLAG}"
     ${EXTRA_SDK_CMAKE_FLAGS}
     -DCMAKE_INSTALL_PREFIX=${CMAKE_CURRENT_BINARY_DIR}/aws_sdk_cpp
+    -DCMAKE_INSTALL_LIBDIR=lib
     TEST_COMMAND ""
   )
   SET_TARGET_PROPERTIES(aws_sdk_cpp PROPERTIES EXCLUDE_FROM_ALL TRUE)