[pre] Update Helm release mimir-distributed to v5.4.0

This MR contains the following updates:

Package	Type	Update	Change
mimir-distributed (source)	pre	minor	5.3.0 -> 5.4.0

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Release Notes

grafana/helm-charts (mimir-distributed)

v5.4.0

Compare Source

Grafana Mimir

Source commit: https://github.com/grafana/mimir/commit/28c73df150f7d73c977133951a79efad20cbed75

Tag on source: https://github.com/grafana/mimir/releases/tag/mimir-distributed-5.4.0

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