Replace the hardcoded year with COPYRIGHT_YEAR

Replace the hardcoded copyright year with the COPYRIGHT_YEAR macro in the emulated Logitech serial mouse's self-report

src/device/mouse_serial.c

@@ -28,6 +28,7 @@
 #include <86box/serial.h>
 #include <86box/mouse.h>
 #include <86box/plat.h>
+#include <86box/version.h>
 
 #define SERMOUSE_PORT 0 /* attach to Serial0 */
 
@@ -537,7 +538,7 @@ ltsermouse_process_command(mouse_t *dev)
  [FORMAT_HEX] = 0x04,
  [FORMAT_MS_4BYTE] = 0x08, /* Guess */
  [FORMAT_MS_WHEEL] = 0x08 }; /* Guess */
- const char *copr = "\r\n(C) 2023 86Box, Revision 3.0";
+ const char *copr = "\r\n(C) " COPYRIGHT_YEAR " 86Box, Revision 3.0";
 
  mouse_serial_log("ltsermouse_process_command(): %02X\n", dev->ib);
  dev->command = dev->ib;