add note about pinned node 18.6 version to ci tests

CHANGELOG.md

@@ -1,8 +1,9 @@
 # changelog
 
- * 2.3.3 _Jul.27.2023_
+ * 2.3.3 _Jul.28.2023_
    * [do not error when processing node hashbang](https://github.com/iambumblehead/esmock/pull/217) scripts from @tommy-mitchell
    * [add note explaining](https://github.com/iambumblehead/esmock/pull/211) why tsx [does not work](https://github.com/esbuild-kit/tsx/issues/264)
+   * [pin node 18.16.x](https://github.com/iambumblehead/esmock/pull/217) to ci test matrix, re node [!48948](https://github.com/nodejs/node/issues/48948)
  * 2.3.2 _Jul.22.2023_
    * [restore ava unit-test](https://github.com/iambumblehead/esmock/pull/213) process at node20 test pipeline
    * [investigate problems](https://github.com/iambumblehead/esmock/issues/209) using tsx from @tommy-mitchell