Add changelog entry for #1962 (#2269)

## Checklist

- [-] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [-] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [-] I have not broken the cheatsheet

Author: pokey

changelog/2024-03-addLuaSupport.md

@@ -0,0 +1,6 @@
+---
+tags: [enhancement]
+pullRequest: 1962
+---
+
+- Add support for the Lua programming language