Mention people who helped in release notes

Author: dbanty

.changeset/openapi_31_support.md

@@ -11,3 +11,12 @@ The generator will now attempt to generate code for OpenAPI documents with versi
 - `const` (defines `Literal` types)
 
 The generator does not currently validate that the OpenAPI document is valid for a specific version of OpenAPI, so it may be possible to generate code for documents that include both removed 3.0 syntax (e.g., `nullable`) and new 3.1 syntax (e.g., `null` as a type).
+
+Thanks to everyone who helped make this possible with discussions and testing, including:
+
+- @frco9
+- @vogre
+- @naddeoa
+- @staticdev
+- @philsturgeon
+- @johnthagen