Update Helm release loki to v5.43.3

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
loki (source)	minor	5.42.2 -> 5.43.3

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Release Notes

grafana/helm-charts (loki)

### [`v5.43.3`](https://togithub.com/grafana/helm-charts/releases/tag/helm-loki-5.43.3) Helm chart for Grafana Loki in simple, scalable mode Source commit: https://github.com/grafana/loki/commit/817c516bd27ff2974f18dd392cc1fc7e0d2f1e5b Tag on source: https://github.com/grafana/loki/releases/tag/helm-loki-5.43.3 ### [`v5.43.2`](https://togithub.com/grafana/helm-charts/releases/tag/helm-loki-5.43.2) Helm chart for Grafana Loki in simple, scalable mode Source commit: https://github.com/grafana/loki/commit/50b51dd6cae5d5d61d23d311c9db4a472f085b85 Tag on source: https://github.com/grafana/loki/releases/tag/helm-loki-5.43.2 ### [`v5.43.1`](https://togithub.com/grafana/helm-charts/releases/tag/helm-loki-5.43.1) Helm chart for Grafana Loki in simple, scalable mode Source commit: https://github.com/grafana/loki/commit/a955ba93362cd3349d68511c01a26deec8a70f80 Tag on source: https://github.com/grafana/loki/releases/tag/helm-loki-5.43.1 ### [`v5.43.0`](https://togithub.com/grafana/helm-charts/releases/tag/helm-loki-5.43.0) Helm chart for Grafana Loki in simple, scalable mode Source commit: https://github.com/grafana/loki/commit/687978826f065de2d9501b55a41104ad89b3e321 Tag on source: https://github.com/grafana/loki/releases/tag/helm-loki-5.43.0 ### [`v5.42.3`](https://togithub.com/grafana/helm-charts/releases/tag/helm-loki-5.42.3) Helm chart for Grafana Loki in simple, scalable mode Source commit: https://github.com/grafana/loki/commit/256f3971052848963fc4d4c9e24a346afbe1b32c Tag on source: https://github.com/grafana/loki/releases/tag/helm-loki-5.42.3

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