Bump io-classes version

Author: bolt12

cabal.project

@@ -11,8 +11,8 @@ repository cardano-haskell-packages
     d4a35cd3121aa00d18544bb0ac01c3e1691d618f462c46129271bccf39f7e8ee
 
 index-state:
-    hackage.haskell.org 2024-02-06T12:00:00Z
-  , cardano-haskell-packages 2023-05-16T03:39:10Z
+    hackage.haskell.org 2024-05-20T10:04:11Z
+  , cardano-haskell-packages 2024-05-15T19:28:23Z
 
 
 packages: ./typed-protocols

typed-protocols/typed-protocols.cabal

@@ -32,7 +32,7 @@ library
                    , TypeOperators
                    , BangPatterns
   build-depends:     base,
-                     io-classes >= 1.0 && < 1.4
+                     io-classes >= 1.0 && < 1.6
 
   hs-source-dirs:    src
   default-language:  Haskell2010