chore(gocd): Update gocd-jsonnet to remove customer-6 #16931

Job	Run time
pre-commit hooks	46s
detect what files changed	4s
Linting - Rust	2m 34s
mypy typing	1m 14s
Dataset Config Validation	50s
self-hosted-end-to-end	20m 7s
Build snuba CI image	9m 31s
Publish Snuba to DockerHub	0s
Front end tests for snuba admin	53s
Tests on multiple clickhouse versions (23.8.11.29.altinitystable)	8m 30s
Tests and code coverage (test)	8m 45s
sentry (0)	5m 19s
Tests and code coverage (test_rust)	4m 36s
sentry (1)	5m 13s
Tests and code coverage (test_distributed)	14m 1s
sentry (2)	5m 57s
Tests and code coverage (test_distributed_migrations)	1m 59s
sentry (3)	5m 22s
	1h 35m 41s

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