Fix issue with trailing whitespace (#3195)

* chore: upgrade all pre-commit hooks to latest version

* chore: add trailing-whitespace pre-commit hook

* refactor: Avoid trailing whitespace in box definitions

* docs: Add Robin Bowes as a contributor

---------

Co-authored-by: Robin Bowes <robin.bowes@yo61.com>

Author: darrenburns

.pre-commit-config.yaml

@@ -16,6 +16,7 @@ repos:
       - id: mixed-line-ending
       - id: check-vcs-permalinks
       - id: check-shebang-scripts-are-executable
+      - id: trailing-whitespace
   - repo: https://github.com/pre-commit/pygrep-hooks
     rev: v1.10.0
     hooks:
@@ -34,7 +35,7 @@ repos:
     hooks:
       - id: black
         exclude: ^benchmarks/
-  - repo: https://github.com/pycqa/isort
+  - repo: https://github.com/PyCQA/isort
     rev: 5.12.0
     hooks:
       - id: isort

CONTRIBUTORS.md

@@ -8,6 +8,7 @@ The following people have contributed to the development of Rich:
 - [Gregory Beauregard](https://github.com/GBeauregard/pyffstream)
 - [Artur Borecki](https://github.com/pufereq)
 - [Pedro Aaron](https://github.com/paaaron)
+- [Robin Bowes](https://github.com/yo61)
 - [Dennis Brakhane](https://github.com/brakhane)
 - [Darren Burns](https://github.com/darrenburns)
 - [Jim Crist-Harif](https://github.com/jcrist)