bump go.uber.org/zap from 1.21.0 to 1.26.0 in /exporter/prometheusremotewriteexporter #1391

Job	Run time
setup-environment	12m 46s
checks	23s
unittest (1.18)	48s
check-collector-module-version	6s
lint	25s
unittest (1.17)	1m 4s
build-examples	1m 18s
integration-tests	8m 9s
correctness-traces	3m 42s
correctness-metrics	3m 22s
cross-compile	0s
windows-msi	0s
build-package	0s
publish-check	0s
publish-stable	0s
publish-dev	0s
	32m 3s

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