[Chapel Merge] Adding date check for grace period

Branch: refs/heads/main
Revision: 8f9e559
Author: Maxrimus
Link: Adding date check for grace period by Maxrimus · Pull Request #18896 · chapel-lang/chapel · GitHub
Log Message:

Merge pull request #18896 from Maxrimus/copyright_update

Adding date check for grace period

[reviewed by @lydia-duncan ]

Modified Files:
M util/test/checkCopyrights.bash

Compare: https://github.com/chapel-lang/chapel/compare/c1bec50d8bd7...8f9e55986033