fix deprecated-declarations error

replace sig_hashes with sig_alg

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index f627274..388ffe0 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -2586,7 +2586,7 @@
     {
         crt_profile_for_test.allowed_mds |= MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 );
         mbedtls_ssl_conf_cert_profile( &conf, &crt_profile_for_test );
-        mbedtls_ssl_conf_sig_hashes( &conf, ssl_sig_hashes_for_test );
+        mbedtls_ssl_conf_sig_algs( &conf, ssl_sig_algs_for_test );
     }
 #endif /* MBEDTLS_X509_CRT_PARSE_C */