Distro metadata - Update Ubuntu 24.04 to v6.19.3-1

Author: github-actions[bot]

docs/tools/distro-metadata.json

@@ -35,11 +35,11 @@
     {
       "name": "Ubuntu 24.04 - Noble Numbat",
       "iso": [
-        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.18.5-1/ubuntu-24.04-6.18.5-t2-noble.iso.00",
-        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.18.5-1/ubuntu-24.04-6.18.5-t2-noble.iso.01",
-        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.18.5-1/ubuntu-24.04-6.18.5-t2-noble.iso.02"
+        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.19.3-1/ubuntu-24.04-6.19.3-t2-noble.iso.00",
+        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.19.3-1/ubuntu-24.04-6.19.3-t2-noble.iso.01",
+        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.19.3-1/ubuntu-24.04-6.19.3-t2-noble.iso.02"
       ],
-      "sha256": "TBD"
+      "sha256": "fe59c63b3bc68eaa424c69bf53c3520d20c1e04d340a52a8db9393578840c5e2"
     },
     {
       "name": "Ubuntu 25.10 - Questing Quokka",