Rename new_session_ticket state

Both client and server side use
`MBEDTLS_SSL_NEW_SESSION_TICKET` now

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index a6c9708..942d705 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -12609,7 +12609,7 @@
             "$P_CLI debug_level=4" \
             0 \
             -c "Protocol is TLSv1.3" \
-            -c "MBEDTLS_SSL_CLIENT_NEW_SESSION_TICKET" \
+            -c "MBEDTLS_SSL_NEW_SESSION_TICKET" \
             -c "got new session ticket." \
             -c "HTTP/1.0 200 ok"
 
@@ -12623,7 +12623,7 @@
             "$P_CLI debug_level=4" \
             0 \
             -c "Protocol is TLSv1.3" \
-            -c "MBEDTLS_SSL_CLIENT_NEW_SESSION_TICKET" \
+            -c "MBEDTLS_SSL_NEW_SESSION_TICKET" \
             -c "got new session ticket." \
             -c "HTTP/1.0 200 OK"