fix(build): update go version to 1.16 and dependencies (#2136)

* chore(deps): bump k8s.io/apiextensions-apiserver from 0.19.2 to 0.21.3

Bumps [k8s.io/apiextensions-apiserver](https://github.com/kubernetes/apiextensions-apiserver) from 0.19.2 to 0.21.3.
- [Release notes](https://github.com/kubernetes/apiextensions-apiserver/releases)
- [Commits](https://github.com/kubernetes/apiextensions-apiserver/compare/v0.19.2...v0.21.3)

---
updated-dependencies:
- dependency-name: k8s.io/apiextensions-apiserver
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* chore(deps): bump google.golang.org/api from 0.34.0 to 0.52.0

Bumps [google.golang.org/api](https://github.com/googleapis/google-api-go-client) from 0.34.0 to 0.52.0.
- [Release notes](https://github.com/googleapis/google-api-go-client/releases)
- [Changelog](https://github.com/googleapis/google-api-go-client/blob/master/CHANGES.md)
- [Commits](https://github.com/googleapis/google-api-go-client/compare/v0.34.0...v0.52.0)

---
updated-dependencies:
- dependency-name: google.golang.org/api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* start update dependencies

* update mods and otlp

* fix(build): update to go 1.16

* old version for k8s mods

* update k8s versions

* update orbos

* with batcher

* add batch span processor

* try with older otel version 0.20

* remove syncer

* otel rc2

* fix config

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Stefan Benz <stefan@caos.ch>

build/operator/Dockerfile

@@ -6,7 +6,7 @@ ARG ENV=prod
 ## Go base build
 ## Speed up this step by mounting your local go mod pkg directory
 #######################
-FROM golang:1.15 as go-base
+FROM golang:1.16 as go-base
 
 WORKDIR src/github.com/caos/zitadel/
 COPY go.mod go.sum ./

build/zitadel/Dockerfile

@@ -1,4 +1,4 @@
-ARG GO_VERSION=1.15
+ARG GO_VERSION=1.16
 
 #######################
 ## These steps set platform / arch type specific variables