Update spdlog to version 1.14.0 / rev 34 via SR 1170249
    
    https://build.opensuse.org/request/show/1170249
    by user comrad + anag+factory
    - Update spdlog to 1.14.0
    - Release notes 1.14.0:
      * Updated bundled fmt to version 10.2.1.
      * Mapped Diagnostic Context (MDC) support by @massimiliano96 in #2907.
        DC is a simple map of key->string values stored in thread local storage whose content will be printed by the loggers.
      * Add milliseconds support to stopwatch by @brodao2 in #3034
      * Add std::string_view overloads for logger accessor by @BenLeadbetter in #3023
      * Make async_logger::flush() synchronous - wait for the flush operation to complete before returning by @walkerlala in #3049
      * Use _stat() on Windows to be more UTF8 friendly by @liubing in #2978
      * Add details about how compile time macros work by @egaban in #2981
      * Fix typos found by codespell by @DimitriPapadopoulos in #3011
      * Expose the flusher thread o