AthenaAuditors: add missing zlib dependency for CentOS9

Adding a missing zlib dependency to AthenaAuditors to get the package built on CentOS9 as discussed on ATEAM-839. This is a follow-up to MR !54778 (merged).

Tagging @ssnyder , @akraszna, @nstyles for feedback and info.

Control/AthenaAuditors/CMakeLists.txt

@@ -8,11 +8,12 @@ find_package( Boost )
 find_package( gdb )
 find_package( gperftools )
 find_package( libunwind )
+find_package( ZLIB )
 
 # Component(s) in the package:
 atlas_add_component( AthenaAuditors
    src/*.h src/*.cxx src/components/*.cxx
    DEFINITIONS PACKAGE=AthenaAuditors
-   INCLUDE_DIRS ${Boost_INCLUDE_DIRS} ${GDB_INCLUDE_DIRS} ${LIBUNWIND_INCLUDE_DIRS} ${GPERFTOOLS_INCLUDE_DIRS}
-   LINK_LIBRARIES ${Boost_LIBRARIES} ${GDB_LIBRARIES} ${LIBUNWIND_LIBRARIES} ${CMAKE_DL_LIBS}
+   INCLUDE_DIRS ${Boost_INCLUDE_DIRS} ${GDB_INCLUDE_DIRS} ${LIBUNWIND_INCLUDE_DIRS} ${GPERFTOOLS_INCLUDE_DIRS} ${ZLIB_INCLUDE_DIRS}
+   LINK_LIBRARIES ${Boost_LIBRARIES} ${GDB_LIBRARIES} ${LIBUNWIND_LIBRARIES} ${CMAKE_DL_LIBS} ${ZLIB_LIBRARIES}
    AthenaBaseComps AthenaKernel CxxUtils GaudiKernel )