mbedtls: upgrade 3.6.4 -> 3.6.5

Contains fixes for CVE-2025-54764 and CVE-2025-59438

Also, add the recipe to the ptest image list, because it was missing.
Ptests passed successfully.

Changelog: https://github.com/Mbed-TLS/mbedtls/releases/tag/mbedtls-3.6.5

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/conf/include/ptest-packagelists-meta-oe.inc

@@ -33,6 +33,7 @@ PTESTS_FAST_META_OE = "\
     libxml++-5.0 \
     libyang \
     lmdb \
+    mbedtls \
     microsoft-gsl \
     minicoredumper \
     minizip-ng \