docs: update changelog versions

Author: github-actions[bot]

crates/oas3/CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+## 0.19.1
+
 - Add `spec::Server::extensions` field.
 - Add `spec::ServerVariable::extensions` field.
 

crates/oas3/README.md

@@ -3,8 +3,8 @@
 <!-- prettier-ignore-start -->
 
 [![crates.io](https://img.shields.io/crates/v/oas3?label=latest)](https://crates.io/crates/oas3)
-[![Documentation](https://docs.rs/oas3/badge.svg?version=0.19.0)](https://docs.rs/oas3/0.19.0)
-[![dependency status](https://deps.rs/crate/oas3/0.19.0/status.svg)](https://deps.rs/crate/oas3/0.19.0)
+[![Documentation](https://docs.rs/oas3/badge.svg?version=0.19.1)](https://docs.rs/oas3/0.19.1)
+[![dependency status](https://deps.rs/crate/oas3/0.19.1/status.svg)](https://deps.rs/crate/oas3/0.19.1)
 ![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/oas3.svg)
 <br />
 [![CI](https://github.com/x52dev/oas3-rs/actions/workflows/ci.yml/badge.svg)](https://github.com/x52dev/oas3-rs/actions/workflows/ci.yml)

crates/roast/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 0.9.1
+
+- No significant changes since `0.9.0`.
+
 ## 0.9.0
 
 - Update `oas3` dependency to `0.19`.