Add global pre-commit exclude for data/playground (#2581)

- Fixes #2577

## 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

.pre-commit-config.yaml

@@ -1,7 +1,7 @@
 minimum_pre_commit_version: "2.9.0"
 ci:
   autoupdate_schedule: monthly
-exclude: /vendor/
+exclude: /vendor/|^data/playground/
 repos:
   - repo: meta
     hooks: