ci: switch action to install just to avoid nodejs 16 deprecation warnings

[reubenmiller]

Use a different Github action to avoid node16 deprecation warnings when running the test workflow

[github-actions]

Robot Results

✅ Passed	❌ Failed	⏭️ Skipped	Total	Pass %
8	0	0	8	100

Passed Tests

Name	⏱️ Duration	Suite
Install node-red from github url	9.456 s	Management
Install node-red from tarball	2.833 s	Management
Uninstall node-red project via Cumulocity	7.961 s	Management
Uninstall node-red project via Cumulocity using the active project	11.874 s	Management
Install new project when nodered is not running	12.415 s	Management
Install node-red from github url with space in its name	11.509 s	Management
node-red project should be running and processing thin-edge telemetry	5.042 s	Telemetry
node-red status should publish to health endpoint	0.129 s	Telemetry