feat: protect the Date header #18501

Job	Run time
Lint Rust	2m 34s
cargo deny	33s
Build C library (ubuntu-latest)	2m 36s
Rust doc comments	18s
Check provider database	6s
Build C library (macos-latest)	2m 51s
Build deltachat-rpc-server (ubuntu-latest)	2m 3s
Rust tests (ubuntu-latest, 1.84.1)	2m 57s
Build deltachat-rpc-server (macos-latest)	1m 57s
Rust tests (windows-latest, 1.84.1)	10m 30s
Build deltachat-rpc-server (windows-latest)	6m 12s
Rust tests (macos-latest, 1.84.1)	2m 38s
Rust tests (ubuntu-latest, 1.81.0)	3m 6s
Python lint	11s
CFFI Python tests (ubuntu-latest, 3.13)	4m 53s
CFFI Python tests (macos-latest, 3.13)	4m 28s
CFFI Python tests (ubuntu-latest, pypy3.10)	6m 41s
CFFI Python tests (macos-latest, pypy3.10)	5m 41s
CFFI Python tests (ubuntu-latest, 3.8)	4m 55s
JSON-RPC Python tests (ubuntu-latest, 3.13)	2m 21s
JSON-RPC Python tests (macos-latest, 3.13)	3m 10s
JSON-RPC Python tests (windows-latest, 3.13)	3m 14s
JSON-RPC Python tests (ubuntu-latest, pypy3.10)	2m 30s
JSON-RPC Python tests (macos-latest, pypy3.10)	2m 34s
JSON-RPC Python tests (ubuntu-latest, 3.8)	2m 30s
	1h 21m 29s

Provide feedback