internal/proxy: TestClientLimitsMaxConnections failed

[flaky-bot]

This test failed!

To configure my behavior, see the Flaky Bot documentation.

If I'm commenting on this issue too often, add the flakybot: quiet label and
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---

commit: 19d7ad9
buildURL: https://github.com/GoogleCloudPlatform/alloydb-auth-proxy/actions/runs/7550125554
status: failed

[flaky-bot]

Looks like this issue is flaky. 😟

I'm going to leave this open and stop commenting.

A human should fix and close this.

---

When run at the same commit (19d7ad9), this test passed in one build (https://github.com/GoogleCloudPlatform/alloydb-auth-proxy/actions/runs/7550125554) and failed in another build (https://github.com/GoogleCloudPlatform/alloydb-auth-proxy/actions/runs/7550125554).

[enocom]

=== RUN TestClientLimitsMaxConnections
2024/01/17 02:14:28 [proj.region.clust.inst] Listening on 127.0.0.1:5000
2024/01/17 02:14:28 [proj.region.clust.inst] accepted connection from 127.0.0.1:49207
2024/01/17 02:14:28 [proj.region.clust.inst] accepted connection from 127.0.0.1:49206
2024/01/17 02:14:28 max connections (1) exceeded, refusing new connection
proxy_test.go:347: dial attempts did not match expected, want = 1, got = 0
--- FAIL: TestClientLimitsMaxConnections (0.00s)