add support for `workflow_dispatch` event, bump to node20

[MishaKav]

• remove warning by run in node20 instead node16
• add support for workflow_dispatch event, thanks to @f100024 for contribution

[github-actions[bot]]

Coverage Report

File	Stmts	Miss	Cover	Missing
functions/example_completed
example_completed.py	64	19	70%	33, 39–45, 48–51, 55–58, 65–70, 91–92
functions/example_manager
example_manager.py	44	11	75%	31–33, 49–55, 67–69
example_static.py	40	2	95%	60–61
functions/my_exampels
example.py	20	20	0%	1–31
functions/resources
resources.py	26	26	0%	1–37
TOTAL	1055	739	30%

Tests	Skipped	Failures	Errors	Time
109	2 :zzz:	1 :x:	0 :fire:	0.583s :stopwatch: