Fix cabal version

wismill · wismill · commit ab9a608b3b95 · 2022-07-07T19:38:58.000+02:00
diff --git a/ucd2haskell/ucd2haskell.cabal b/ucd2haskell/ucd2haskell.cabal
@@ -1,4 +1,4 @@
-cabal-version:      3.4
+cabal-version:      3.0
 name:               ucd2haskell
 version:            0.1.0.0
 -- synopsis:
