Rename evptests.txt to evppkey.txt

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3443)

test/recipes/30-test_evp.t

@@ -15,7 +15,7 @@ use OpenSSL::Test qw/:DEFAULT srctop_file/;
 setup("test_evp");
 
 my @files = ( "evpciph.txt", "evpdigest.txt", "evpencod.txt", "evpkdf.txt",
-    "evpmac.txt", "evppbe.txt", "evptests.txt" );
+    "evpmac.txt", "evppbe.txt", "evppkey.txt" );
 
 plan tests => length(@files);