Update EC certs to use NIST-256 and NIST-384
diff --git a/tests/data_files/server7.key b/tests/data_files/server7.key
index 844bb44..0088331 100644
--- a/tests/data_files/server7.key
+++ b/tests/data_files/server7.key
@@ -1,5 +1,5 @@
 -----BEGIN EC PRIVATE KEY-----
-MF8CAQEEGO82j8OXBoUhVyauCA8XZ288l595u7BXWqAKBggqhkjOPQMBAaE0AzIA
-BMtC4d2X4RMAYgvI5iXxIPDRsQg6hxLc/oT4GLN+4Q8/cEzqGPgiQ7RFHA3nYBQq
-ag==
+MHcCAQEEILBDMs7bRVxVg6ovTpf2zB9m+22jY7R3LNKRvCPfa6YJoAoGCCqGSM49
+AwEHoUQDQgAEHG336dql6qGcsnIZqAkcc63eFbvepuOzTwXobRAuOmk3l4A5wXX/
+vs5wAawLX1wUTUM/AESHmAZrJK9tq5So8g==
 -----END EC PRIVATE KEY-----