[Chapel Merge] Revert "Bump dawidd6/action-send-mail from 3 to 17"

Branch: refs/heads/main
Revision: d7981b1e60f45530d1346a7dccc775c167251d3a
Author: chapel-lang
Link: Revert "Bump dawidd6/action-send-mail from 3 to 17" by arifthpe · Pull Request #28815 · chapel-lang/chapel · GitHub
Log Message:
Revert "Bump dawidd6/action-send-mail from 3 to 17" (#28815)

Reverts chapel-lang/chapel#28812

Broke because from now needs to be a valid email address (currently is
just github username), will fix in a bit.

Compare: Comparing 7b1321b16a10e3a9b85c52de4c072aea7a04fafb...cdc6b018a4de98e9ac74e30d4a4dc08076e607dd · chapel-lang/chapel · GitHub

Diff:
M .github/workflows/email.yml
https://github.com/chapel-lang/chapel/pull/28815.diff