Bump go.uber.org/zap from 1.21.0 to 1.26.0 in /exporter/sapmexporter #1360

Job	Run time
setup-environment	18m 51s
check-collector-module-version	5s
checks	16s
build-examples	1m 19s
correctness-metrics	38s
correctness-traces	1m 10s
integration-tests	8m 33s
lint	19s
unittest (1.18)	41s
unittest (1.17)	57s
cross-compile	0s
windows-msi	0s
build-package	0s
publish-check	0s
publish-dev	0s
publish-stable	0s
	32m 49s

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