Invoke webkit-patch validate-changelog in ews with python 3.
Created attachment 437276 [details] Patch
Sample run: https://ews-build.webkit-uat.org/#/builders/26/builds/2071
Committed r282040 (241340@main): <https://commits.webkit.org/241340@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 437276 [details].
<rdar://problem/82746302>