chore: make CIs build in parallel

[realstealthninja]

Description of Change

Improve build times by making the builds parallel
see TheAlgorithms/C-Plus-Plus/2714 for more information

References

Checklist

• Added description of change
• Added file name matches File name guidelines
• Added tests and example, test must pass
• Relevant documentation/comments is changed or added
• PR title follows semantic commit guidelines
• Search previous suggestions before making a new one, as yours may be a duplicate.
• I acknowledge that all my contributions will be made under the project's license.

Notes:

[realstealthninja]

ubuntu went from 21s to 11s
macos went from 1m to 18s
windows went from 5m to 2m

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[github-actions]

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