Upgrade gitea to 1.16.7

[robe]

There are no breaking changes, but numerous bug fixes and security fix. We are currently on 1.6.6

    SECURITY
        Escape git fetch remote (#19487) (#19490)
    BUGFIXES
        Don't overwrite err with nil (#19572) (#19574)
        On Migrations, only write commit-graph if wiki clone was successful (#19563) (#19568)
        Respect DefaultUserIsRestricted system default when creating new user (#19310) (#19560)
        Don't error when branch's commit doesn't exist (#19547) (#19548)
        Support hostname:port to pass host matcher's check (#19543) (#19544)
        Prevent intermittent race in attribute reader close (#19537) (#19539)
        Fix 64-bit atomic operations on 32-bit machines (#19531) (#19532)
        Prevent dangling archiver goroutine (#19516) (#19526)
        Fix migrate release from github (#19510) (#19523)
        When view _Siderbar or _Footer, just display once (#19501) (#19522)
        Fix blame page select range error and some typos (#19503)
        Fix name of doctor fix "authorized-keys" in hints (#19464) (#19484)
        User specific repoID or xorm builder conditions for issue search (#19475) (#19476)
        Prevent dangling cat-file calls (goroutine alternative) (#19454) (#19466)
        RepoAssignment ensure to close before overwrite (#19449) (#19460)
        Set correct PR status on 3way on conflict checking (#19457) (#19458)
        Mark TemplateLoading error as "UnprocessableEntity" (#19445) (#19446)

[robe]

upgrade complete both on dev and prod