Drop support for GHC 8.4.4

Author: tarleb

.github/workflows/ci.yml

@@ -17,8 +17,6 @@ jobs:
     strategy:
       matrix:
         versions:
-          - ghc: '8.4.4'
-            cabal: '2.4'
           - ghc: '8.6.5'
             cabal: '3.2'
           - ghc: '8.8.4'

hslua-module-doclayout.cabal

@@ -15,8 +15,7 @@ build-type:          Simple
 extra-doc-files:     README.md
                      CHANGELOG.md
 extra-source-files:  test/test-doclayout.lua
-tested-with:         GHC == 8.4.4
-                   , GHC == 8.6.5
+tested-with:         GHC == 8.6.5
                    , GHC == 8.8.4
                    , GHC == 8.10.7
                    , GHC == 9.0.2