Mark simple plugin ghcide test broken on 9.6

Author: FinleyMcIlwaine

ghcide/test/exe/Main.hs

@@ -1248,7 +1248,8 @@ pluginSimpleTests =
 
   -- Error: cabal: Failed to build ghc-typelits-natnormalise-0.7.7 (which is
   -- required by plugin-1.0.0). See the build log above for details.
-  ignoreFor (BrokenSpecific Windows [GHC94, GHC96]) "ghc-typelist-natnormalise fails to build on GHC 9.4.2 for windows only" $
+  knownBrokenForGhcVersions [GHC96] "fragile, frequently times out" $
+  ignoreFor (BrokenSpecific Windows [GHC94]) "ghc-typelist-natnormalise fails to build on GHC 9.4.2 for windows only" $
   testSessionWithExtraFiles "plugin-knownnat" "simple plugin" $ \dir -> do
     _ <- openDoc (dir </> "KnownNat.hs") "haskell"
     liftIO $ writeFile (dir</>"hie.yaml")