remove incorrect required cmake function annotation

libraries/psibase/sdk/pack_service.cmake

@@ -311,7 +311,7 @@ endfunction()
 #                             built/managed by cargo-psibase, as opposed to packages built entirely using CMake.
 # OUTPUT <filename>         - [Required] The package file.
 # PATH <filepath>           - [Required] The path to the cargo workspace (e.g. `services/user/Branding`).
-# DEPENDS <targets>...      - [Required] Targets that this target depends on
+# DEPENDS <targets>...      - Targets that this target depends on
 function(cargo_psibase_package)
     cmake_parse_arguments(ARG "" "PATH;OUTPUT;DEPENDS" "" ${ARGN})