Hide avro schema registry auth in logs

[antaljanosbenjamin]

Changelog category (leave one):

• Bug Fix (user-visible misbehavior in an official stable release)

Changelog entry (a user-readable short description of the changes that goes into CHANGELOG.md):

Mask Avro schema registry authentication details to be not visible to user or in logs.

Documentation entry for user-facing changes

• Documentation is written (mandatory for new features)

[clickhouse-gh]

Workflow [PR], commit [6727e26]

Summary: ⏳

job_name	test_name	status	info	comment
Stress test (arm_asan)		failure
	Server died	FAIL
	Hung check failed, possible deadlock found (see hung_check.log)	FAIL
	Cannot start clickhouse-server	FAIL
	Server failed to start (see application_errors.txt and clickhouse-server.clean.log)	FAIL
	Killed by signal (in clickhouse-server.log)	FAIL
	Fatal message in clickhouse-server.log (see fatal_messages.txt)	FAIL
	Killed by signal (output files)	FAIL

[antaljanosbenjamin]

@kssenii I am not too confident with these changes, but I think my changes actually improve the code and shouldn't break anytihng.

[antaljanosbenjamin]

• Stress test (arm_asan) Logical error: Tasks in BackgroundSchedulePool cannot throw #50666
• Stateless tests (amd_binary, old analyzer, s3 storage, DatabaseReplicated, 2/2) - Lock is lost, node does not exist (zero copy) #74734
• AST fuzzer (amd_debug) Remove tests for zero-copy replication #82250

[antaljanosbenjamin]

Marking the checks successful manually.