Add release notes

packages/io/RELEASES.md

@@ -1,26 +1,35 @@
 # @actions/io Releases
 
-### 2.0.0
+## 3.0.0
+
+- **Breaking change**: Package is now ESM-only
+  - CommonJS consumers must use dynamic `import()` instead of `require()`
+
+## 2.0.0
+
 - Add support for Node 24 [#2110](https://github.com/actions/toolkit/pull/2110)
 - Ensures consistent behavior for paths on Node 24 with Windows
 
-### 1.1.3
+## 1.1.3
+
 - Replace `child_process.exec` with `fs.rm` in `rmRF` for all OS implementations [#1373](https://github.com/actions/toolkit/pull/1373)
 
-### 1.1.2
+## 1.1.2
+
 - Update `lockfileVersion` to `v2` in `package-lock.json [#1020](https://github.com/actions/toolkit/pull/1020) 
 
-### 1.1.1
+## 1.1.1
+
 - [Fixed a bug where we incorrectly escaped paths for rmrf](https://github.com/actions/toolkit/pull/828)
 
-### 1.1.0
+## 1.1.0
 
 - Add `findInPath` method to locate all matching executables in the system path
 
-### 1.0.2
+## 1.0.2
 
 - [Add \"types\" to package.json](https://github.com/actions/toolkit/pull/221)
 
-### 1.0.0
+## 1.0.0
 
 - Initial release