ci: use cabal 3.14 in ghcup job

Author: TerrorJack

.github/workflows/build.yml

@@ -56,7 +56,7 @@ jobs:
 
       - name: cabal
         run: |
-          ghcup install cabal --set latest
+          ghcup install cabal --set 3.14
 
       - name: wasm32-wasi-ghc
         run: |