Add allowlist for emails beyond bot list

In migrating the GH ECA hook to use the service, it was discovered that all commits through the GH UI commit via a Github noreply email user. We should allow these commits rather than block the commit. We can treat these users as functionally bots in terms of current functionality and to ease the integration.

added Enhancement + 1 deleted label

added to epic eclipsefdn&15 (closed)

removed from epic eclipsefdn&15 (closed)

removed time estimate

added team:webdev label

This exists in current functionality under the config item for eclipse.git-eca.mail-validation.allow-list

closed