Fixup cabal file update

Author: aniketd

eras/byron/ledger/impl/cardano-ledger-byron.cabal

@@ -339,7 +339,7 @@ library testlib
     -Wunused-packages
 
   build-depends:
-    base >=4.18 && <5,
+    base,
     base16-bytestring >=1,
     bimap,
     byron-spec-chain,