Boost.System no longer has a library.

--- hugin-2024.0.1/CMakeLists.txt	2024-11-19 15:51:02.000000000 +0000
+++ hugin-2024.0.1/CMakeLists.txt	2025-08-15 03:34:31.923597897 +0100
@@ -373,7 +373,7 @@
   ENDIF()
 ENDIF(WIN32)
 
-FIND_PACKAGE(Boost 1.47 COMPONENTS filesystem system)
+FIND_PACKAGE(Boost 1.47 COMPONENTS filesystem)
 
 IF (NOT Boost_FOUND)
   IF(WIN32)