Skip plugin test for ghc 9.12.1

Author: hamishmack

test/plugin/default.nix

@@ -20,7 +20,7 @@ in recurseIntoAttrs {
 
   # Not sure why this breaks for ghc 8.10.7
   meta.disabled = compiler-nix-name == "ghc8107"
-    || builtins.elem compiler-nix-name [ "ghc912020241128" "ghc91320241204" ]
+    || builtins.elem compiler-nix-name [ "ghc9121" "ghc912020241128" "ghc91320241204" ]
     || stdenv.hostPlatform.isMusl
     || stdenv.hostPlatform.isGhcjs
     || stdenv.hostPlatform.isWindows