Bump ghc-prim upper bound

Author: adithyaov

unicode-transforms.cabal

@@ -84,7 +84,7 @@ library
       base         >= 4.8 && < 5
     , unicode-data >= 0.2 && < 0.3
     , bytestring   >= 0.9 && < 0.12
-    , ghc-prim     >= 0.2 && < 0.8
+    , ghc-prim     >= 0.2 && < 0.9
 
     -- We depend on a lot of internal modules in text. We keep the upper bound
     -- inclusive of the latest stable version.