maintainers: update dblsaiko (#432923)

Author: SuperSandro2000

maintainers/maintainer-list.nix

@@ -5914,7 +5914,7 @@
   };
   dblsaiko = {
     email = "[email protected]";
-    github = "2xsaiko";
+    github = "dblsaiko";
     githubId = 3987560;
     name = "Katalin Rebhan";
   };