Bump version to 1.4.0

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Cargo.lock

@@ -2051,7 +2051,7 @@ dependencies = [
 
 [[package]]
 name = "image-api"
-version = "1.3.0"
+version = "1.4.0"
 dependencies = [
  "actix",
  "actix-cors",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "image-api"
-version = "1.3.0"
+version = "1.4.0"
 authors = ["Cameron Cordes <cameronc.dev@gmail.com>"]
 edition = "2024"