Update grafana/promtail Docker tag to v2.8.3

[renovate]

This PR contains the following updates:

Package	Update	Change
grafana/promtail	patch	2.8.2 -> 2.8.3

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Release Notes

grafana/loki (grafana/promtail)

v2.8.3

Compare Source

This is release v2.8.3 of Loki.

Notable changes:

Loki:

• Upgrade go version to 1.20.6
• Querier: configurable chunk cache writeback queue bytes size
• Query-scheduler: fix query distribution in SSD mode
• Fix duplicate label values from ingester streams.

Promtail:

• Break on iterate journal failure
• Prevent logging errors on normal shutdown

Installation:

The components of Loki are currently distributed in plain binary form and as Docker container images. Choose what fits your use-case best.

Docker container:

• https://hub.docker.com/r/grafana/loki
• https://hub.docker.com/r/grafana/promtail

$ docker pull "grafana/loki:2.8.3"
$ docker pull "grafana/promtail:2.8.3"

Binary

We provide pre-compiled binary executables for the most common operating systems and architectures.
Choose from the assets below for the application and architecture matching your system.
Example for Loki on the linux operating system and amd64 architecture:

$ curl -O -L "https://github.com/grafana/loki/releases/download/v2.8.3/loki-linux-amd64.zip"

### extract the binary
$ unzip "loki-linux-amd64.zip"

### make sure it is executable
$ chmod a+x "loki-linux-amd64"

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Configuration

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