Test failure: `ServerTlsHandshakeMetricsTest.handshakeSuccess()`

[ikhoon]

ServerTlsHandshakeMetricsTest > handshakeSuccess(SessionProtocol, String, String) > com.linecorp.armeria.server.ServerTlsHandshakeMetricsTest.handshakeSuccess(SessionProtocol, String, String)[3] FAILED
    org.awaitility.core.ConditionTimeoutException: Assertion condition defined as a com.linecorp.armeria.server.ServerTlsHandshakeMetricsTest 
    Expected size: 1 but was: 2 in:
    [io.micrometer.prometheus.PrometheusCounter@3caa7cfb,
        io.micrometer.prometheus.PrometheusCounter@39d0a9a4] within 10 seconds.
        at app//org.awaitility.core.ConditionAwaiter.await(ConditionAwaiter.java:167)
        at app//org.awaitility.core.AssertionCondition.await(AssertionCondition.java:119)
        at app//org.awaitility.core.AssertionCondition.await(AssertionCondition.java:31)
        at app//org.awaitility.core.ConditionFactory.until(ConditionFactory.java:985)
        at app//org.awaitility.core.ConditionFactory.untilAsserted(ConditionFactory.java:769)
        at app//com.linecorp.armeria.server.ServerTlsHandshakeMetricsTest.handshakeSuccess(ServerTlsHandshakeMetricsTest.java:86)
        Caused by:
        java.lang.AssertionError: 
        Expected size: 1 but was: 2 in:
        [io.micrometer.prometheus.PrometheusCounter@3caa7cfb,
            io.micrometer.prometheus.PrometheusCounter@39d0a9a4]
            at com.linecorp.armeria.server.ServerTlsHandshakeMetricsTest.lambda$handshakeSuccess$1(ServerTlsHandshakeMetricsTest.java:88)