This reverts d5ce1a47eaad935ea709b7a03bfdf6c69bac8f32 and therefore adds the GPG feature back into main.
As it is a breaking change, this PR now also contains the required upgrade notes.
Closes#107 again.
Co-authored-by: justusbunsi <sk.bunsenbrenner@gmail.com>
Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/374
Reviewed-by: pat-s <pat-s@noreply.gitea.io>
Reviewed-by: John Olheiser <john+gitea@jolheiser.com>
19e9b07e6e