Adding the "-j" option in ci make commands to parallelize CI builds

[Shivshankar-Reddy]

fixes: #1123

As per github documentation below is core information on runners.

Linux:
public repositories: 4 cores
private repositories: 2 cores

Macos:
its 3 or 4 based on both and its depends on the Processor.

Reference details for more information: Discussion in #1123

• Public repo: https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories

• Private repo: https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for--private-repositories

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.63%. Comparing base (1c22680) to head (1f9e330).

Additional details and impacted files

@@             Coverage Diff              @@
##           unstable    #1128      +/-   ##
============================================
- Coverage     70.65%   70.63%   -0.02%     
============================================
  Files           114      114              
  Lines         61713    61713              
============================================
- Hits          43601    43592       -9     
- Misses        18112    18121       +9     

see 12 files with indirect coverage changes

[pizhenwei]

@Shivshankar-Reddy
It would be thankful if you add "Suggested-by: zhenwei pi [email protected]" in commit message.