MDEV-16665 ed25519 describes itself as 1.0-alpha even though it's not alpha.

Plugin version name fixed.

mysql-test/suite/plugins/r/auth_ed25519.result

@@ -33,7 +33,7 @@ PLUGIN_DESCRIPTION	Elliptic curve ED25519 based authentication
 PLUGIN_LICENSE	GPL
 LOAD_OPTION	ON
 PLUGIN_MATURITY	Stable
-PLUGIN_AUTH_VERSION	1.0-alpha
+PLUGIN_AUTH_VERSION	1.0
 create user test1@localhost identified via ed25519 using 'ZIgUREUg5PVgQ6LskhXmO+eZLS0nC8be6HPjYWR4YJY';
 show grants for test1@localhost;
 Grants for test1@localhost

plugin/auth_ed25519/server_ed25519.c

@@ -101,7 +101,7 @@ maria_declare_plugin(ed25519)
   0x0100,
   NULL,
   NULL,
-  "1.0-alpha",
+  "1.0",
   MariaDB_PLUGIN_MATURITY_STABLE
 }
 maria_declare_plugin_end;