archwiki: upgrade to 1.39.0-1

See merge request !666

In order to get access to the `killUser` command.

mastodon: add credentials to vault

See merge request !662

URL: https://fosstodon.org/@archlinux

Previously the task for creating an issue in archlinux-keyring to remove
a main key was bundled together with the similar task for packager keys.

Also introduce a task for removing the @master-key.archlinux.org email.

The format of the keyring issue creation tasks was modified in commit
d47c558c ("Improve .gitlab/issue_templates/Offboarding.md").

Improve .gitlab/issue_templates/Offboarding.md

See merge request !659

- Link to referenced files in the git repo.
- Use new issue URLs that preselect the issue template.
- Add dev and TU private IRC channels.

Add dev and TU private IRC channels to the onboarding issue template

See merge request !658

archwiki: show the main page's language button in the header

See merge request !660

Enable $wgVectorLanguageInMainPageHeader, so that the main page is consistent with other pages.
See https://www.mediawiki.org/wiki/Skin:Vector/2022#$wgVectorLanguageInMainPageHeader.

Compare: https://wiki.archlinux.org/?languageinmainpageheader=1 vs https://wiki.archlinux.org/?languageinmainpageheader=0

Discussed in https://wiki.archlinux.org/title/MediaWiki_talk:Common.css#Main_page_columns_and_Vector_2022_language_links.

- Add `ft=systemd` where needed
- Remove `ft=` where filetype detection works (especially jinja.vim)
- Set `sw=2 sts=-1 et` everywhere

Use the localpart for the default IRC nicknames instead of the display
name, which should make for more succinct nicks.

We have been using sponsored Equinix Metal boxes for years (sponsorship
managed by CNCF[1]). This adds a service account[2], so we don't need to
rely on individual access.

[1] https://github.com/cncf/cluster
[2] https://github.com/cncf/cluster/issues/213

Ref #485

aurweb: bump to v6.1.9

See merge request !661

Signed-off-by: Leonidas Spyropoulos <artafinde@archlinux.org>

Copy the latest dashboard from upstream, fixing the graphs.

Ref: rfcs!15

Similarly to geo.mirror.pkgbuild.com, this is monitored elsewhere.

Fix #475

No reason this should be 0600 as it doesn't contain any sensitive data;
switch it back to the package's default permissions of 0644.

syncrepo: let mirrorsync perform the repo syncing

See merge request !652

This role will still handle setting up nginx and rsyncd, due to specific
configuration requirements these services have.

We're also effectively relieving build.archlinux.org of rsyncd duties as
it is not something it should be doing anyway.

mailman: update mkinitcpio URL in arch-projects mailing list description

See merge request !654

mkinitcpio moved from GitHub to gitlab.archlinux.org.
See #474.

I think this was renamed when Keycloak switched to Quarkus.

keycloak: remove /auth from all Keycloak endpoints

See merge request !655

From [1]: "By default, the new Quarkus distribution removes /auth from
           the context-path."

[1] https://www.keycloak.org/migration/migrating-to-quarkus

matrix: Enable backchannel logouts from keycloak to synapse

See merge request !653