Bump go.uber.org/zap from 1.21.0 to 1.26.0 in /internal/coreinternal #1453

Job	Run time
setup-environment	7m 21s
checks	18s
lint	20s
check-collector-module-version	8s
integration-tests	2m 36s
unittest (1.18)	1m 19s
unittest (1.17)	55s
build-examples	57s
correctness-metrics	57s
correctness-traces	1m 2s
cross-compile	0s
windows-msi	0s
build-package	0s
publish-check	0s
publish-dev	0s
publish-stable	0s
	15m 53s

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