fix: Lint issues after merge to main

[salvacorts]

What this PR does / why we need it:
Followup PR for #13308 fixing a lint issue that broke main.

INFO [runner] linters took 28.358598988s with stages: goanalysis_metalinter: 28.013548731s 
integration/bloom_building_test.go:111:14: SA4010: this result of append is never used, except maybe in other appends (staticcheck)
		builders = append(builders, builder)

Checklist

• Reviewed the CONTRIBUTING.md guide (required)
• Documentation added
• Tests updated
• Title matches the required conventional commits format, see here
  • Note that Promtail is considered to be feature complete, and future development for logs collection will be in Grafana Alloy. As such, feat PRs are unlikely to be accepted unless a case can be made for the feature actually being a bug fix to existing behavior.
• Changes that require user attention or interaction to upgrade are documented in docs/sources/setup/upgrade/_index.md
• For Helm chart changes bump the Helm chart version in production/helm/loki/Chart.yaml and update production/helm/loki/CHANGELOG.md and production/helm/loki/README.md. Example PR
• If the change is deprecating or removing a configuration option, update the deprecated-config.yaml and deleted-config.yaml files respectively in the tools/deprecated-config-checker directory. Example PR