The script used to identify and update the change is added into the GitHub
workflows script directory. A workflow action can be created to trigger the
script to update the headers on the first of every new year. Possibly a task for
a consequent PR.
To avoid further issues with the publishing of
documentations I have written a test to ensure that
all documentation files can be exported to html.
To avoid issues with loading the right org version
after package installation I have also slightly
modified the test workflow to include a dedicated
package installation target done prior to executing
any tests.