Merge branch 'feature/mbedtls-2.16.12-integration' into 'master'

mbedtls: upgrade to release v2.16.12

Closes IDF-4463

See merge request espressif/esp-idf!16442

components/mbedtls/Kconfig

@@ -132,14 +132,14 @@ menu "mbedTLS"
             certificate and private key to ssl config object again.
 
     config MBEDTLS_DYNAMIC_FREE_CA_CERT
-        bool "Free SSL ca certificate after its usage"
+        bool "Free SSL CA certificate after its usage"
         default y
         depends on MBEDTLS_DYNAMIC_FREE_CONFIG_DATA
         help
-            Free ca certificate after its usage in the handshake process.
+            Free CA certificate after its usage in the handshake process.
             This option will decrease the heap footprint for the TLS handshake, but may lead to a problem:
             If the respective ssl object needs to perform the TLS handshake again,
-            the ca certificate should once again be registered to the ssl object.
+            the CA certificate should once again be registered to the ssl object.
 
     config MBEDTLS_DEBUG
         bool "Enable mbedTLS debugging"

components/mbedtls/mbedtls

@@ -1 +1 @@
-Subproject commit 73cfa42bd39a704fa2706e3c1b1b532be5f19eed
+Subproject commit dc406b82b20481bde74a60fa8a776285d3fb9cf3