[bitreq] Add a changelog entry for 0.3

... in Australian time

Author: TheBlueMatt

bitreq/CHANGELOG.md

@@ -1,3 +1,13 @@
+# 0.3.0 - 2026-01-16
+
+* Fix a denial-of-service issue due to lack of bounding in response size [#452](https://github.com/rust-bitcoin/corepc/pull/452)
+* Add support for `native-tls` in addition to `rustls` [#451](https://github.com/rust-bitcoin/corepc/pull/451)
+* Support connection reuse via a `Client` object [#450](https://github.com/rust-bitcoin/corepc/pull/450)
+* Make `async` native async rather than spawning a blocking task [#448](https://github.com/rust-bitcoin/corepc/pull/448)
+* Remove `urlencoding` dependence [#424](https://github.com/rust-bitcoin/corepc/pull/424)
+* Remove `punycode` dependency [#423](https://github.com/rust-bitcoin/corepc/pull/423)
+* Remove unused `tokio` features [#421](https://github.com/rust-bitcoin/corepc/pull/421)
+
 # 0.2.0 - 2025-10-31
 
 * Re-implement `json-using-serde` feature [#398](https://github.com/rust-bitcoin/corepc/pull/398)