upgrade to go1.20 and auto set go mem limit (#5732)

* upgrade to go1.19 and set go mem limit

* create ocis-pkg memlimit package

* use std automemlimit import

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* import automemlimit in every ocis service, drop ocis-pkg/memlimit package

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* bump go to 1.20

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* drop unused config options and env vars

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* update all version numbers, add doc

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* fix lint

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* update bingo and mockery

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* bump golangci-lint

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* fix selector test

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

* Update changelog/unreleased/enhancement-memlimit.md

Co-authored-by: kobergj <juliankoberg@googlemail.com>

---------

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>
Co-authored-by: Willy Kloucek <wkloucek@owncloud.com>
Co-authored-by: kobergj <juliankoberg@googlemail.com>

docs/ocis/development/getting-started.md

@@ -16,7 +16,7 @@ So we are trying to reflect this in the tooling. It should be kept simple and qu
 
 Besides standard development tools like git and a text editor, you need the following software for development:
 
-- Go >= v1.19 ([install instructions](https://golang.org/doc/install))
+- Go >= v1.20 ([install instructions](https://golang.org/doc/install))
 - pnpm ([install instructions](https://pnpm.io/installation))
 - docker ([install instructions](https://docs.docker.com/get-docker/))
 - docker-compose ([install instructions](https://docs.docker.com/compose/install/))