Bump knex from 0.15.2 to 0.19.5 in /backend (NginxProxyManager#294)

Bumps [knex](https://github.com/knex/knex) from 0.15.2 to 0.19.5.
- [Release notes](https://github.com/knex/knex/releases)
- [Changelog](https://github.com/knex/knex/blob/master/CHANGELOG.md)
- [Commits](knex/knex@0.15.2...0.19.5)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: jc21 <[email protected]>

Merge from develop v2.0.14 release (NginxProxyManager#196)

* Selection of the ssl protocols/ciphers is done using the default server block. (NginxProxyManager#189)
* Fix wrap for tags (NginxProxyManager#195)

Use correct var when returning updated certificate

Forgot to change dockerfiles to match CI names

Version Bump

Version bump

Updated arm instructions

Updated readme and version bump

Fix examples to use Aria db variant

Merge pull request NginxProxyManager#29 from jc21/develop

Http2 support