Fix test failure

The test was checking for an obsolete error.

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>

tests/ssl-opt.sh

diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index c8e4985..674485e 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -5375,7 +5375,7 @@
             "$P_CLI force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=foo psk=abc123" \
             1 \
-            -s "SSL - None of the common ciphersuites is usable" \
+            -s "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"