Update tested-with GHC in cabal config

Author: jneira

Diff for: ghcide/ghcide.cabal

@@ -13,7 +13,7 @@ description:
     A library for building Haskell IDE's on top of the GHC API.
 homepage:           https://github.com/haskell/ghcide#readme
 bug-reports:        https://github.com/haskell/ghcide/issues
-tested-with:        GHC>=8.6.5
+tested-with:        GHC == 8.6.4 || == 8.6.5 || == 8.8.2 || == 8.8.3 || == 8.8.4 || == 8.10.1 || == 8.10.2 || == 8.10.3
 extra-source-files: include/ghc-api-version.h README.md CHANGELOG.md
                     test/data/hover/*.hs
                     test/data/multi/cabal.project

Diff for: haskell-language-server.cabal

@@ -14,6 +14,7 @@ copyright:          Alan Zimmerman
 license:            Apache-2.0
 license-file:       LICENSE
 build-type:         Simple
+tested-with:        GHC == 8.6.4 || == 8.6.5 || == 8.8.2 || == 8.8.3 || == 8.8.4 || == 8.10.1 || == 8.10.2 || == 8.10.3
 extra-source-files:
   README.md
   ChangeLog.md