Ingester memory improvements by adjusting prealloc #9634

Job	Run time
Build	1m 47s
Benchmark	9m 34s
Run integration tests (test-e2e)	20m 31s
Lint	3m 27s
Run integration tests (test-integration-poller)	10m 6s
Run Unit Tests (test-with-cover-pkg)	3m 14s
Run integration tests (test-e2e-deployments)	13m 23s
Run Unit Tests (test-with-cover-tempodb)	16m 1s
Run integration tests (test-e2e-serverless)	7m 18s
Build technical documentation	19s
Run Unit Tests (test-with-cover-tempodb-wal)	11m 30s
Vendor check	1m 23s
Check jsonnet & tempo-mixin	55s
Run Unit Tests (test-with-cover-others)	12m 34s
	1h 52m 2s

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