Update release (release-0.30.0 -> release-0.31.0)

Bump minimum supported Ubuntu version

Ubuntu ended support for 16.04 in April

Upgrade Heisenbridge (1.1.0 -> 1.1.1)

Upgrade grafana (8.1.3 -> 8.1.4)

Updates Certbot -> v1.19.0, nginx ->1.21.3-alpine

Fix typo

Upgrade Heisenbridge (1.0.1 -> 1.1.0)

See:
- https://github.com/vector-im/element-web/releases/tag/v1.8.4
- https://matrix.org/blog/2021/09/10/pre-disclosure-upcoming-critical-fix-for-several-popular-matrix-clients

Revert "Move some related tasks closer together in matrix-client-hydrogen"

This reverts commit e913347fe1.

Upgrade grafana (8.1.2 -> 8.1.3)

* add timeout param for nginx proxy

default value matrix_nginx_proxy_request_timeout is 60s

* default matrix_nginx_proxy_request_timeout - 60s

* few more variables for request timeout

* Update nginx.conf.j2

* Update nginx.conf.j2

This reverts commit 732051b8fc.

There's no such container image published yet.

Bump Heisenbridge to v1.0.1

nginx update v1.21.2

http://nginx.org/en/CHANGES

Pull correct version when self building Mautrix Facebook and Synapse Admin

Upgrade to Synaspe v 1.41.1 (Security Update)

Synapse 1.41.1 Patches 2 exploits that can reveal information about rooms an user is not supposed to have access to information about.

Jitsi Update (stable-5963 -> stable-6173)

Add link to Dimension admin page

This avoids having to create a new room and to click the "Add widgets, bridges & bots" link (Formerly the four-squares-icon)

matrix_jitsi_jicofo_component_secret var removed #1139

Update Coturn (4.5.2-r3 -> 4.5.2-r4)

Update prometheus (2.29.1 -> 2.29.2)

Update prometheus (2.29.1 -> 2.29.2)

mjolnir & hydrogen Minor Updates

Grafana Update 8.0.6 -> 8.1.2