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

Author: github-actions[bot]

docs/tools/distro-metadata.json

@@ -53,11 +53,11 @@
     {
       "name": "Kubuntu 24.04 - Noble Numbat",
       "iso": [
-        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.18.5-1/kubuntu-24.04-6.18.5-t2-noble.iso.00",
-        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.18.5-1/kubuntu-24.04-6.18.5-t2-noble.iso.01",
-        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.18.5-1/kubuntu-24.04-6.18.5-t2-noble.iso.02"
+        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.19.3-1/kubuntu-24.04-6.19.3-t2-noble.iso.00",
+        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.19.3-1/kubuntu-24.04-6.19.3-t2-noble.iso.01",
+        "https://github.com/t2linux/T2-Ubuntu/releases/download/v6.19.3-1/kubuntu-24.04-6.19.3-t2-noble.iso.02"
       ],
-      "sha256": "TBD"
+      "sha256": "00b935b22161a87a4d5948ed2b3f2bcd687aadad8f06472cc3e6b8bd5e6028c4"
     },
     {
       "name": "Kubuntu 25.10 - Questing Quokka",