Update README for version 1.4 (#157)

cgrothaus · michalmuskala · commit 93a357784f32 · 2023-07-06T20:52:47.000+01:00
diff --git a/README.md b/README.md
@@ -19,7 +19,7 @@ in `mix.exs`:
 
 ```elixir
 def deps do
-  [{:jason, "~> 1.3"}]
+  [{:jason, "~> 1.4"}]
 end
 ```
 
