Update Helm release wordpress to v0.6.5

See merge request !868

Update Helm release mariadb to v10.4.0

See merge request stackspin/stackspin!867

Update dependency dnspython to v2.2.1

See merge request !863

Update dependency kubernetes to v23

See merge request !859

Update Helm release ingress-nginx to v4.0.18

See merge request stackspin/stackspin!862

Update Helm release kube-prometheus-stack to v33.2.0

See merge request stackspin/stackspin!858

Update Helm release nextcloud-onlyoffice to v0.7.7

See merge request stackspin/stackspin!856

Fix links in troubleshooting docs

See merge request stackspin/stackspin!870

Resolve "Do not fire ContainerMemoryUsage alert for unlabelled metrics"

Closes #1170

See merge request stackspin/stackspin!865

Resolve "Release version 0.8"

Closes #1131

See merge request stackspin/stackspin!866

reduce retries of tests to prevent running into 1h timeout. Fix "new document" button text in Nextcloud taiko test

TRIGGER_JOBS=enable-monitoring,enable-nextcloud,enable-velero,enable-wekan,enable-wordpress,enable-zulip

Resolve "Document alertmanager emails and what they mean"

Closes #1169

See merge request stackspin/stackspin!864

Fixes: #1169

Resolve "k3s.yml can be broken by running the playbook several times"

Closes #1014

See merge request !861

Fixes: #1014

Mitogen seems dead (last release Dec 2020), and ansible-core 2.9.x is EOL
in May 2022 (https://docs.ansible.com/ansible/devel/reference_appendices/release_and_maintenance.html#ansible-core-changelogs).

Resolve "Installation try out"

See merge request stackspin/stackspin!860

edit install_stackspin.rst to make it harder to skip steps. Also add (re)activating your virtualenv to those instructions