hls-class-plugin: Update ghcide dependency

`hls-class-plugin-1.0.1.1` imports `Development.IDE.GHC.Compat.Util`, which doesn't exist until version `1.5.0`

```
Building library for hls-class-plugin-1.0.1.1..
[1 of 1] Compiling Ide.Plugin.Class ( src/Ide/Plugin/Class.hs, dist/build/Ide/Plugin/Class.o, dist/build/Ide/Plugin/Class.dyn_o )

src/Ide/Plugin/Class.hs:27:1: error:
    Could not find module ‘Development.IDE.GHC.Compat.Util’
    Perhaps you meant
      Development.IDE.GHC.Compat (from ghcide-1.4.2.2)
      Development.IDE.GHC.Util (from ghcide-1.4.2.2)
    Use -v (or `:set -v` in ghci) to see a list of the files searched for.
   |
27 | import           Development.IDE.GHC.Compat.Util
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
```

Author: hololeap

plugins/hls-class-plugin/hls-class-plugin.cabal

@@ -29,7 +29,7 @@ library
     , containers
     , ghc
     , ghc-exactprint
-    , ghcide          >=1.2  && <1.6
+    , ghcide          >=1.5.0  && <1.6
     , hls-plugin-api  >=1.1  && <1.3
     , lens
     , lsp