Changes in squid-6.3 (03 Sep 2023):
- Bug 5294: ERR_CANNOT_FORWARD returned instead of ERR_DNS_FAIL
- Bug 4981: Work around in-call job invalidation bugs
- basic_smb_lm_auth: fix 'no previous declaration' warnings
- CacheManager: require /squid-internal-mgr/ URL path prefix
- ESI: Fix build [-Wsingle-bit-bitfield-constant-conversion]
- ... and some documentation changes