[Chapel Merge] Print number of threads used for make in nightly script

Branch: refs/heads/main
Revision: 6e9a7087dcaa8360eac26b31091ab0492b31fcec
Author: arifthpe
Link: Print number of threads used for make in nightly script by arifthpe · Pull Request #28524 · chapel-lang/chapel · GitHub
Log Message:
Print number of threads used for make in nightly script (#28524)

Print number of threads to be used for -j argument to make
invocations from util/cron/nightly.

Similar to Print number of 'make' threads in gen_release by arifthpe · Pull Request #28512 · chapel-lang/chapel · GitHub.

[trivial, not reviewed]

Compare: Comparing ffd676cbb7e3f2cac4b08dd9455e50eaab956e68...d0d7ea167859d3f8cafdcdb01bfa707a9506daad · chapel-lang/chapel · GitHub

Diff:
M util/cron/nightly
https://github.com/chapel-lang/chapel/pull/28524.diff