feat: api v2beta to api v2 (#8283)

# Which Problems Are Solved

The v2beta services are stable but not GA.

# How the Problems Are Solved

The v2beta services are copied to v2. The corresponding v1 and v2beta
services are deprecated.

# Additional Context

Closes #7236

---------

Co-authored-by: Elio Bischof <elio@zitadel.com>

internal/config/config.go

@@ -2,7 +2,6 @@ package config
 
 import (
 	"encoding/json"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -50,7 +49,7 @@ func Read(obj interface{}, configFiles ...string) error {
 func readConfigFile(readerFunc ReaderFunc, configFile string, obj interface{}) error {
 	configFile = os.ExpandEnv(configFile)
 
-	configStr, err := ioutil.ReadFile(configFile)
+	configStr, err := os.ReadFile(configFile)
 	if err != nil {
 		return zerrors.ThrowInternalf(err, "CONFI-nJk2a", "failed to read config file %s", configFile)
 	}