Support OpenAPI version 3.1.x on input

https://spec.openapis.org/oas/v3.1.1.html#versions is clear that
tools SHOULD ignore the patch version.

Author: kw217

crates/aide/src/lib.rs

@@ -11,7 +11,7 @@
 //! See the [examples](https://github.com/tamasfe/aide/tree/master/examples)
 //! to see how Aide is used with various frameworks.
 //!
-//! Currently only Open API version `3.1.0` is supported.
+//! Currently only Open API version `3.1.x` is supported.
 //!
 //! Previous releases of aide relied heavily on macros, and the
 //! [`linkme`](https://docs.rs/linkme/latest/linkme/) crate for automagic global state.

crates/aide/src/openapi/openapi.rs

@@ -112,9 +112,13 @@ mod serde_version {
     pub(super) fn deserialize<'de, D: Deserializer<'de>>(
         de: D,
     ) -> Result<Cow<'static, str>, D::Error> {
-        <&'de str>::deserialize(de).and_then(|s| match s == "3.1.0" {
-            true => Ok(Cow::Owned("3.1.0".to_owned())),
-            false => Err(serde::de::Error::custom("expected 3.1.0")),
+        // Accept any patch version of 3.1.x.
+        <&'de str>::deserialize(de).and_then(|s| {
+            if s.starts_with("3.1.") {
+                Ok(Cow::Owned("3.1.0".to_owned()))
+            } else {
+                Err(serde::de::Error::custom("expected 3.1.x"))
+            }
         })
     }
 }