mbedtls: bump to mbedtls 3.6

This is a temporary commit which is meant to be removed from the list
once #71118 will be merged.

Signed-off-by: Valerio Setti <vsetti@baylibre.com>

west.yml

@@ -277,7 +277,7 @@ manifest:
       revision: 2b498e6f36d6b82ae1da12c8b7742e318624ecf5
       path: modules/lib/gui/lvgl
     - name: mbedtls
-      revision: 6ec4abdcda78dfc47315af568f93e5ad4398dea0
+      revision: 3217c450180fd5e817601c6f479116de69e57461
       path: modules/crypto/mbedtls
       groups:
         - crypto