Link `staging` branch to deploy on isotc211.geolexica.org `staging` branch

[ronaldtse]

When staging branch is updated in the current repo, we should trigger an update of the https://github.com/geolexica/isotc211.geolexica.org/ staging branch.

[ronaldtse]

Thank you @CAMOBAP !

[CAMOBAP]

@ronaldtse @strogonoff The issue fixed, but I would like update isotc204.geolexica.org repo also and merge:

• site-deploy-breviter.yml
• site-deploy.yml

Workflows

[ronaldtse]

@CAMOBAP yes please, thanks! Ideally we want all the workflows to be shared across the site and concept repositories.

[CAMOBAP]

Simplified for both:

• https://github.com/geolexica/isotc204.geolexica.org/pull/14
• https://github.com/geolexica/isotc211.geolexica.org/pull/193