Use GHC2021 and updated gif

Author: joyfulmantis

plugins/hls-overloaded-record-dot-plugin/example.gif

@@ -42,15 +42,15 @@ library
       , unordered-containers
       , containers
     hs-source-dirs:   src
-    default-language: Haskell2010
+    default-language: GHC2021
 
 test-suite tests
     if impl(ghc < 9.2)
       buildable: False
     else
       buildable: True
     import:           warnings
-    default-language: Haskell2010
+    default-language: GHC2021
     type:             exitcode-stdio-1.0
     hs-source-dirs:   test
     main-is:          Main.hs

plugins/hls-overloaded-record-dot-plugin/hls-overloaded-record-dot-plugin.cabal

@@ -1,12 +1,9 @@
 {-# LANGUAGE CPP               #-}
 {-# LANGUAGE DataKinds         #-}
-{-# LANGUAGE DeriveGeneric     #-}
-{-# LANGUAGE FlexibleContexts  #-}
 {-# LANGUAGE LambdaCase        #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE PatternSynonyms   #-}
 {-# LANGUAGE TypeFamilies      #-}
-{-# LANGUAGE TypeOperators     #-}
 {-# LANGUAGE ViewPatterns      #-}
 
 module Ide.Plugin.OverloadedRecordDot