Rob Winch 392129b616
Use 2004-present Copyright Header
The Spring portfolio is changing to use <inception-year>-present in
the copyright headers to simplify keeping headers up to date. This
commit updates the headers and the checkstyle accordingly.

The commit updated etc/checkstyle/header.txt

It also updated the copyright headers using the following find/replace:

Find: (Copyright \d{4})\s*(\-\d{4})? the original author or authors.
Replace: Copyright 2004-present the original author or authors.

Closes gh-17633
2025-07-29 09:45:23 -05:00
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