Update dependency grafana/loki to v2.9.4

[renovate]

This PR contains the following updates:

Package	Update	Change
grafana/loki	patch	v2.9.3 -> v2.9.4

---

Release Notes

grafana/loki (grafana/loki)

v2.9.4

Compare Source

This is release v2.9.4 of Loki.

Notable changes:

• Fixed a couple of data races that can cause panics due to concurrent read-write access of tenant configs.
• Fixed a bug in the log results cache.
• Fixed the cache to atomically check background cache size limit correctly.
• Fixed the discrepancy between the semantics of logs and metrics queries.
• Fixed promtail default scrape config causing CPU and memory load
• Update golang.org/x/crypto to v0.18.0

For a full list of changes, please refer to the CHANGELOG!

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:2.9.4"
$ docker pull "grafana/promtail:2.9.4"

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/v2.9.4/loki-linux-amd64.zip"

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

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

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.