Update meson to version 0.63.2 / rev 87 via SR 1003529
    
    https://build.opensuse.org/request/show/1003529
    by user dimstar + dimstar_suse
    - Update to version 0.63.2:
      + make add_project_dependencies respect build version of include
        dirs.
      + minstall: do not trample install_mode by rpath fixer.
      + fix linker regression for compilers that don't accept LDFLAGS
        directly.
      + tests/7 gnome: Fix incorrect unref of GResource. (forwarded request 1003526 from dimstar)