chore(deps): update dependency grafana/loki to v2.7.3

This MR contains the following updates:

Package	Update	Change
grafana/loki	patch	v2.7.2 -> v2.7.3

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Release Notes

grafana/loki

v2.7.3

Compare Source

This is release v2.7.3 of Loki, a patch release of the v2.7 minor release.

Notable changes:

• Fixed a bug in compactor that caused divide-by-zero panics when startTime and endTime of a delete request were equal.
• Fixed the output of the --version command that showed an incorrect version information.

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:2.7.3"
$ docker pull "grafana/promtail:2.7.3"

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/v2.7.3/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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merged