Bump go.uber.org/zap from 1.21.0 to 1.26.0 in /receiver/awsecscontainermetricsreceiver #1373

Job	Run time
setup-environment	16m 32s
stability-test (TestStabilityMetricsOTLP)	1m 31s
stability-test (TestStabilityMetricsOpenCensus)	1m 5s
stability-test (TestStabilityMetricsCarbon)	54s
stability-test (TestStabilityMetricsSignalFx)	1m 2s
stability-test (TestStabilityTracesOpenCensus)	53s
stability-test (TestStabilityTracesSAPM)	1m 2s
stability-test (TestStabilityTracesOTLP)	1m 7s
stability-test (TestStabilityTracesJaegerGRPC)	53s
stability-test (TestStabilityTracesZipkin)	45s
	25m 44s

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