Update TUF client to fix PHP 8.4 compat issues (joomla#45166)

* Update php-tuf to version 5.3

* revert composer change

Author: SniperSister

composer.json

@@ -108,7 +108,7 @@
     "phpseclib/bcmath_compat": "^2.0.3",
     "jfcherng/php-diff": "^6.16.2",
     "voku/portable-utf8": "dev-joomla-5.3 as 6.0.13",
-    "php-tuf/php-tuf": "^1.0.2",
+    "php-tuf/php-tuf": "^1.0.3",
     "php-debugbar/php-debugbar": "^2.1.6"
   },
   "require-dev": {