Allow building with Cabal 3.12.

Author: peti

cabal2spec.cabal

@@ -30,7 +30,7 @@ source-repository head
 library
   exposed-modules:  Cabal2Spec
   hs-source-dirs:   src
-  build-depends:    base > 4.12 && < 5, Cabal >= 3.8 && < 3.11, filepath, time >= 1.5
+  build-depends:    base > 4.12 && < 5, Cabal >= 3.8 && < 3.13, filepath, time >= 1.5
   default-language: Haskell2010
 
 executable cabal2spec