Changes in squid-7.3 (28 Oct 2025):
- Regression Bug 5520: ERR_INVALID_URL for CONNECT host with leading digit
- Quit NTLM authenticate() on missing NTLM authorization header
- Fix Auth::User::absorb() IP list transfer logic
- Fix type mismatch in new/delete of addrinfo::ai_addr
- Fix libntlmauth string parsing on big-endian machines
- ... and some code cleanups
- ... and some CI improvements