Add a release entry for 4.0.0

packages/http-client/RELEASES.md

@@ -1,38 +1,53 @@
-## Releases
+# Releases
+
+## 4.0.0
+
+- **Breaking change**: Package is now ESM-only
+  - CommonJS consumers must use dynamic `import()` instead of `require()`
 
 ## 3.0.2
 
 - Bump `undici` from `5.28.5` to `6.23.0`
 
 ## 3.0.1
+
 - Add support for ACTIONS_ORCHESTRATION_ID in user-agent and default user-agent [#2229](https://github.com/actions/toolkit/pull/2229)
 
 ## 3.0.0
+
 - Add support for Node 24 [#2110](https://github.com/actions/toolkit/pull/2110)
 
 ## 2.2.3
+
 - Fixed an issue where proxy username and password were not handled correctly [#1799](https://github.com/actions/toolkit/pull/1799)
 
 ## 2.2.2
+
 - Better handling of url encoded usernames and passwords in proxy config [#1782](https://github.com/actions/toolkit/pull/1782)
 
 ## 2.2.1
+
 - Make sure RequestOptions.keepAlive is applied properly on node20 runtime [#1572](https://github.com/actions/toolkit/pull/1572)
 
 ## 2.2.0
+
 - Add function to return proxy agent dispatcher for compatibility with latest octokit packages [#1547](https://github.com/actions/toolkit/pull/1547)
 
 ## 2.1.1
+
 - Add `HttpClientResponse.readBodyBuffer` method to read from a response stream and return a buffer [#1475](https://github.com/actions/toolkit/pull/1475)
 
 ## 2.1.0
+
 - Add support for `*` and subdomains in `no_proxy` [#1355](https://github.com/actions/toolkit/pull/1355) [#1223](https://github.com/actions/toolkit/pull/1223)
 - Bypass proxy for loopback IP adresses [#1360](https://github.com/actions/toolkit/pull/1360))
 
 ## 2.0.1
+
 - Fix an issue with missing `tunnel` dependency [#1085](https://github.com/actions/toolkit/pull/1085)
 
 ## 2.0.0
+
 - The package is now compiled with TypeScript's [`strict` compiler setting](https://www.typescriptlang.org/tsconfig#strict). To comply with stricter rules:
   - Some exported types now include `| null` or `| undefined`, matching their actual behavior.
   - Types implementing the method `RequestHandler.handleAuthentication()` now throw an `Error` rather than returning `null` if they do not support handling an HTTP 401 response. Callers can still use `canHandleAuthentication()` to determine if this handling is supported or not.
@@ -44,25 +59,32 @@
 
 ## 1.0.11
 
-Contains a bug fix where proxy is defined without a user and password. see [PR here](https://github.com/actions/http-client/pull/42)   
+Contains a bug fix where proxy is defined without a user and password. see [PR here](https://github.com/actions/http-client/pull/42)
 
 ## 1.0.9
-Throw HttpClientError instead of a generic Error from the \<verb>Json() helper methods when the server responds with a non-successful status code. 
+
+Throw HttpClientError instead of a generic Error from the \<verb>Json() helper methods when the server responds with a non-successful status code.
 
 ## 1.0.8
+
 Fixed security issue where a redirect (e.g. 302) to another domain would pass headers.  The fix was to strip the authorization header if the hostname was different.  More [details in PR #27](https://github.com/actions/http-client/pull/27)
 
 ## 1.0.7
+
 Update NPM dependencies and add 429 to the list of HttpCodes
 
 ## 1.0.6
+
 Automatically sends Content-Type and Accept application/json headers for \<verb>Json() helper methods if not set in the client or parameters.
 
 ## 1.0.5
+
 Adds \<verb>Json() helper methods for json over http scenarios.
 
 ## 1.0.4
+
 Started to add \<verb>Json() helper methods.  Do not use this release for that.  Use >= 1.0.5 since there was an issue with types.
 
 ## 1.0.1 to 1.0.3
+
 Adds proxy support.