Update versions in external configuration

Switch ThreadX repository to the new official one

Signed-off-by: Jonny Svärd <jonny.svaerd@arm.com>
Change-Id: I84e62f15ecb80f182ce1784fb040981c944728b2
diff --git a/externals.json b/externals.json
index 9be04b4..2b4aec8 100644
--- a/externals.json
+++ b/externals.json
@@ -37,23 +37,22 @@
         {
             "path": "core_software/openamp/libmetal",
             "fetchurl": "https://github.com/OpenAMP/libmetal",
-            "revision": "8041e1c2764812a8d6feded09e68d87bc7812b3e"
+            "revision": "959fddbd706a67b0699e0dd7a46e36fe49079ef9"
         },
         {
             "path": "core_software/openamp/openamp",
             "fetchurl": "https://github.com/OpenAMP/open-amp",
-            "revision": "v2023.10.0"
+            "revision": "1680aada793d78b512f98cc1fa8fc2ee837919e5"
         },
         {
             "path": "core_software/rtos/freertos/freertos_kernel",
             "fetchurl": "https://github.com/FreeRTOS/FreeRTOS-Kernel.git",
-            "revision": "V10.6.1"
+            "revision": "V11.0.1"
         },
         {
             "path": "core_software/rtos/threadx",
-            "name": "linaro",
-            "fetchurl": "https://github.com/Linaro/threadx",
-            "revision": "20ae996c12b6e693db51d5b523d22cd248513702"
+            "fetchurl": "https://github.com/eclipse-threadx/threadx",
+            "revision": "v6.4.1_rel"
         },
         {
             "path": "core_software/tflite_micro",