ccl/sqlproxyccl: TestProxyTLSConf failed

ccl/sqlproxyccl.TestProxyTLSConf [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Ci_TestsAwsLinuxArm64_UnitTests/20987115?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Ci_TestsAwsLinuxArm64_UnitTests/20987115?buildTab=artifacts#/) on master @ [6bf0f9778f34df3d197c28c7f4b2d1a4a27c3288](https://github.com/cockroachdb/cockroach/commits/6bf0f9778f34df3d197c28c7f4b2d1a4a27c3288):

```
=== RUN TestProxyTLSConf
test_log_scope.go:172: test logs captured to: /artifacts/tmp/_tmp/2dcdeaae7bc06474bb2d1d585750c46b/logTestProxyTLSConf789602668
test_log_scope.go:82: use -show-logs to present logs inline
proxy_handler_test.go:945: -- test log scope end --
test logs left over in: /artifacts/tmp/_tmp/2dcdeaae7bc06474bb2d1d585750c46b/logTestProxyTLSConf789602668
--- FAIL: TestProxyTLSConf (3.08s)
=== RUN TestProxyTLSConf/no-skip-verify
proxy_handler_test.go:2958:
Error Trace: pkg/ccl/sqlproxyccl/proxy_handler_test.go:2996
Error: Not equal:
expected: 8
actual : 4
Test: TestProxyTLSConf/no-skip-verify
--- FAIL: TestProxyTLSConf/no-skip-verify (1.05s)
```
Help

See also: [How To Investigate a Go Test Failure \(internal\)](https://cockroachlabs.atlassian.net/l/c/HgfXfJgM)

/cc @cockroachdb/sql-foundations

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Jira issue: CRDB-58772