Update cdk to version 5.0.20230201 / rev 25 via SR 1094845
    
    https://build.opensuse.org/request/show/1094845
    by user WernerFink + dimstar_suse
    - Let libcdk6_3_4 conflict with older libcdk6_2_4
    
    - Update to version 5.0.20230201
      + improve compiler-warnings in configure-checks.
      + change library dependencies in rpm spec-file.
      + update license in test-packages.
      + relicense as MIT-X11
      + reduce shellcheck warnings in support-scripts
      + updated configure script to work around regression in GNU grep 3.8
      + updated configure macros from xterm and ncurses development
      + update config.guess, config.sub
      + fix cppcheck style-warnings.
      + improve makefile header-dependencies by accounting for all generated
        headers (report/patch by Sergei Trofimovich).
      + updated configure macros from xterm and ncurses development:
        CF_ADD_INCDIR CF_APPEND_CFLAGS CF_DISABLE_ECHO CF_MAKEFLAGS
        CF_NCURSES_CONFIG CF_NCURSES_LIBS CF_PKG_CO