Bump versions of ghc and cabal for linux and windows builds.

Author: robinheghan

.github/workflows/build.yml

@@ -7,8 +7,8 @@ on:
     branches: [main]
 
 env:
-  ghc: "9.4.8"
-  cabal: "3.8.1.0"
+  ghc: "9.6.6"
+  cabal: "3.10.3.0"
 
 jobs:
   validate-code-formatting: