ref: Add external contributor to CHANGELOG.md (#14220)

This PR adds the external contributor to the CHANGELOG.md file, so that
they are credited for their contribution. See #14218

Co-authored-by: lforst <8118419+lforst@users.noreply.github.com>

Author: HazAT

CHANGELOG.md

@@ -10,7 +10,7 @@
 
 - "You miss 100 percent of the chances you don't take. — Wayne Gretzky" — Michael Scott
 
-Work in this release was contributed by @gilisho. Thank you for your contribution!
+Work in this release was contributed by @gilisho and @phuctm97. Thank you for your contributions!
 
 ## 8.37.1