Disable iroh on OpenBSD #14737

Job	Run time
cargo deny	34s
Build C library (ubuntu-latest)	3m 8s
Build C library (macos-latest)	3m 47s
Rust doc comments	48s
Lint Rust	2m 1s
Check provider database	5s
Python lint	13s
Rust tests (ubuntu-latest, 1.78.0)	3m 26s
Build deltachat-rpc-server (ubuntu-latest)	2m 48s
Rust tests (windows-latest, 1.78.0)	9m 25s
Build deltachat-rpc-server (macos-latest)	3m 28s
Rust tests (macos-latest, 1.78.0)	3m 24s
Rust tests (ubuntu-latest, 1.77.0)	3m 29s
Build deltachat-rpc-server (windows-latest)	8m 28s
CFFI Python tests (ubuntu-latest, 3.12)	6m 53s
CFFI Python tests (macos-latest, 3.12)	4m 2s
CFFI Python tests (ubuntu-latest, pypy3.10)	6m 27s
CFFI Python tests (macos-latest, pypy3.10)	6m 7s
CFFI Python tests (ubuntu-latest, 3.7)	4m 37s
JSON-RPC Python tests (ubuntu-latest, 3.12)	2m 9s
JSON-RPC Python tests (macos-latest, 3.12)	2m 36s
JSON-RPC Python tests (windows-latest, 3.12)	2m 33s
JSON-RPC Python tests (ubuntu-latest, pypy3.10)	3m 27s
JSON-RPC Python tests (macos-latest, pypy3.10)	3m 10s
JSON-RPC Python tests (ubuntu-latest, 3.7)	2m 2s
	1h 29m 7s

Provide feedback