fix(mac): date command options not found #8757 (#8758)

# Which Problems Are Solved
Closes: #8757 

Problem:
```sh
➜  ~ date --rfc-3339=seconds | sed 's/ /T/'
date: illegal option -- -
usage: date [-jnRu] [-I[date|hours|minutes|seconds]] [-f input_fmt]
            [-r filename|seconds] [-v[+|-]val[y|m|w|d|H|M|S]]
            [[[[mm]dd]HH]MM[[cc]yy][.SS] | new_date] [+output_fmt]
```

# How the Problems Are Solved
```sh
➜  date "+%Y-%m-%dT%T%z" | sed -E 's/.([0-9]{2})([0-9]{2})$/-\1:\2/'
2024-10-10T19:09:53-05:30
➜  TZ=America/Los_Angeles date "+%Y-%m-%dT%T%z" | sed -E 's/.([0-9]{2})([0-9]{2})$/-\1:\2/'
2024-10-10T06:39:41-07:00
```

- `Mac` support while compiling the source code locally

Co-authored-by: Stefan Benz <46600784+stebenz@users.noreply.github.com>

Makefile

@@ -2,7 +2,7 @@ go_bin := "$$(go env GOPATH)/bin"
 gen_authopt_path := "$(go_bin)/protoc-gen-authoption"
 gen_zitadel_path := "$(go_bin)/protoc-gen-zitadel"
 
-now := $(shell date --rfc-3339=seconds | sed 's/ /T/')
+now := $(shell date '+%Y-%m-%dT%T%z' | sed -E 's/.([0-9]{2})([0-9]{2})$$/-\1:\2/')
 VERSION ?= development-$(now)
 COMMIT_SHA ?= $(shell git rev-parse HEAD)
 ZITADEL_IMAGE ?= zitadel:local