Use 1024 bits RSA key size for RSA PK Opaque tests

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/tests/suites/test_suite_pk.data b/tests/suites/test_suite_pk.data
index 18e165b..323efc2 100644
--- a/tests/suites/test_suite_pk.data
+++ b/tests/suites/test_suite_pk.data
@@ -348,7 +348,7 @@
 
 PSA wrapped sign: RSA PKCS1 v1.5
 depends_on:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15:MBEDTLS_GENPRIME
-pk_psa_sign:512:PSA_KEY_TYPE_RSA_KEY_PAIR:512
+pk_psa_sign:1024:PSA_KEY_TYPE_RSA_KEY_PAIR:1024
 
 PK Sign ext:RSA2048,PK_RSA,MD_SHA256
 depends_on:MBEDTLS_PKCS1_V15:MBEDTLS_SHA256_C:MBEDTLS_RSA_C