Various notifications state that it’s not available for free and I need to upgrade my plan, but I was unable to find any information what plan should I upgrade to. Tried to search in plan comparison table, help, google. Is it available in Team plan or it requires Enterprise or One?
Glad to see you in Github Community Forum!
Team plan, Enterprise or One plan all works, to reduce cost, you can choose Team plan.
It’s mentioned in the Github Blog here:
Organization secrets can be shared with any public repository, and to private repositories within that organization that are part of a GitHub Team or Enterprise, or GitHub One plan.
How is it going? Let me know if you have any queries.