v0.5.20 发布

v0.5.20 的 GitHub Release 发布说明：v0.5.20（release task：Issue #1076）。

Tag 状态（对 origin 验证）

Ref	对象	指向
`v0.5.20`	注解 tag `b459273b2802754e1cab5698d34f7a605ece1f22`	提交 `d89abb46adb8e959de2a9639fe194c2805a01862`

resolve_active_login fails the delivery when gh auth status exits 1 for a stale secondary account while the active account is valid (Issue #1074; PR #1075)