fix: reflect license change in version info of test suite entrypoint

src/carbon_test_manager.c

@@ -25,8 +25,7 @@ void carbon_test_manager_argparse(i32 argc, char **argv) {
     "%s homepage: <https://github.com/sparky-game/carbon>\n";
   static const char * const version_msg = "%s %s\n"
     "Copyright (C) Wasym A. Alonso. All Rights Reserved.\n"
-    "License BSD-3-Clause: <https://opensource.org/license/BSD-3-Clause>.\n"
-    "License GPL-3.0-only: <https://www.gnu.org/licenses/gpl-3.0>.\n"
+    "License AGPL-3.0-only: <https://www.gnu.org/licenses/agpl-3.0>.\n"
     "This is free software: you are free to change and redistribute it.\n"
     "There is NO WARRANTY, to the extent permitted by law.\n"
     "\n"