libriscv.cabal: Relax melf version constraint

libriscv.cabal

@@ -89,7 +89,7 @@ library
         , filepath             ^>= 1.4.2.1
         , bytestring            >= 0.10.10 && <0.12
         , exceptions           ^>= 0.10.4
-        , melf                 ^>= 1.3.1
+        , melf                 ^>= 1.3.0
         , freer-simple         ^>= 1.2.1.2
         , transformers         ^>= 0.6.1.1
         , optparse-applicative  >= 0.16.1 && <0.19