Upgrade version of cabal used in CI. (#46)

Author: jonathanknowles

.github/workflows/build.yml

@@ -25,7 +25,7 @@ jobs:
           - macOS-latest
           - windows-latest
         cabal:
-          - '3.10'
+          - '3.14'
         ghc:
           - '8.10'
           - '9.0'