build: depend on all cargo outputs in custom target

The custom target driving the cargo build depended only on LIB_FILE
(the main library), not LIB_OUTPUTS (which also includes the import
library on Windows for cdylib builds). If the import library was
missing or stale but the DLL existed, CMake would consider the target
up-to-date and skip the cargo invocation, causing link failures.

Use LIB_OUTPUTS so the target depends on all expected artifacts.

Author: wprzytula

cmake/CMakeCargo.cmake

@@ -246,7 +246,7 @@ function(cargo_build)
     COMMENT "running cargo rustc --crate-type ${CARGO_CRATE_TYPE}"
   )
 
-  add_custom_target(${CARGO_NAME}_${CARGO_CRATE_TYPE}_target ALL DEPENDS ${LIB_FILE})
+  add_custom_target(${CARGO_NAME}_${CARGO_CRATE_TYPE}_target ALL DEPENDS ${LIB_OUTPUTS})
 
   if(CARGO_CRATE_TYPE STREQUAL "staticlib")
     add_library(${CARGO_NAME}_${CARGO_CRATE_TYPE} STATIC IMPORTED GLOBAL)