Log Message:
libshout: update to 2.4.5.

libshout 2.4.5 (20201219)

* Improved shout.h for reading, and understanding.
* Marked dumpfile support as obsolete (as SHOUT_PROTOCOL_XAUDIOCAST already is).
* Added Support for setting the content language.
* Avoid the use of obsolete functions (#2317).
* Several small fixes for non-blocking mode (#2321, #2315).
* Corrected detection of libogg (mostly for windows targets).
* Now accept TLS mode "auto" when build without TLS support.
* Added new tool shout(1).