Use Prometheus fast regexp #9604

Job	Run time
Lint	3m 12s
Build	1m 49s
Benchmark	9m 30s
Run integration tests (test-e2e)	20m 53s
Run Unit Tests (test-with-cover-pkg)	3m 14s
Run integration tests (test-integration-poller)	9m 59s
Vendor check	1m 28s
Run Unit Tests (test-with-cover-tempodb)	15m 38s
Run integration tests (test-e2e-deployments)	13m 16s
Run Unit Tests (test-with-cover-tempodb-wal)	11m 21s
Run integration tests (test-e2e-serverless)	7m 14s
Run Unit Tests (test-with-cover-others)	12m 24s
Build technical documentation	21s
Check jsonnet & tempo-mixin	47s
	1h 51m 6s

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