Update Helm release loki to v5.43.6

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
loki (source)	patch	5.43.3 -> 5.43.6

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Release Notes

grafana/helm-charts (loki)

### [`v5.43.6`](https://togithub.com/grafana/helm-charts/releases/tag/helm-loki-5.43.6) Helm chart for Grafana Loki in simple, scalable mode Source commit: https://github.com/grafana/loki/commit/336c90920a6153bd4015914924bb380bc83b4c8b Tag on source: https://github.com/grafana/loki/releases/tag/helm-loki-5.43.6 ### [`v5.43.5`](https://togithub.com/grafana/helm-charts/releases/tag/helm-loki-5.43.5) Helm chart for Grafana Loki in simple, scalable mode Source commit: https://github.com/grafana/loki/commit/0d505bb4408e407aa903e6c03c6c51207b5a3ca7 Tag on source: https://github.com/grafana/loki/releases/tag/helm-loki-5.43.5 ### [`v5.43.4`](https://togithub.com/grafana/helm-charts/releases/tag/helm-loki-5.43.4) Helm chart for Grafana Loki in simple, scalable mode Source commit: https://github.com/grafana/loki/commit/c1084a144a02c7f9e2e6d7d7bc4a2b26422548e2 Tag on source: https://github.com/grafana/loki/releases/tag/helm-loki-5.43.4

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