squid: Update to 5.7

squid: Update to 5.7

For details see:
http://www.squid-cache.org/Versions/v5/changesets/SQUID_5_7.html

Excerpt from changelog:
"Changes in squid-5.7 (05 Sep 2022):

	- Regression Fix: Typo in manager ACL
	- Bug 5186: noteDestinationsEnd check failed: transportWait
	- Bug 5160: Test suite fails with -flto=auto
	- Bug 3193 pt2: NTLM decoder truncating strings
	- Bug 5133: OpenSSL 3.0 support
	- ext_session_acl: fix TDB key lookup
	- forward_max_tries: Do not count discarded connections
	- ... and many compile and debugging fixes"

Signed-off-by: Matthias Fischer <matthias.fischer@ipfire.org>
Reviewed-by: Peter Müller <peter.mueller@ipfire.org>