chore(deps): update dependency grafana/loki to v2.9.15

[renovate]

This PR contains the following updates:

Package	Update	Change
grafana/loki	patch	2.9.10 -> 2.9.15

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Release Notes

grafana/loki (grafana/loki)

v2.9.15

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Bug Fixes

• ci: Pull in latest 2.9-specific release code (#​18019) (7b805ba)
• deps: update module golang.org/x/net to v0.38.0 [security] (release-2.9.x) (#​17275) (6297508)

v2.9.14

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Features

• Upgrade golang.org/x/oauth2 to 0.27.0 (#​16960) (fb70d03)

Bug Fixes

• Fix Loki CVEs for 2.9 (#​17065) (5faccce)
• Remove remaining replaces to fix CVEs for 2.9.x (#​17095) (26fcedb)
• Upgrade docker/docker used by 2.9.x (#​17091) (914adec)
• Upgrade k8s.io/api used by Loki 2.9.x (#​17093) (0da39f4)
• Upgrade packages used by docker/docker for 2.9.x (#​17074) (2c8da3d)

v2.9.13

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Bug Fixes

• deps: Loki 2.9.x Bump Alpine and Go versions (#​16294) (f2deeb7)

v2.9.12

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Bug Fixes

• deps: CVE updates for Loki 2.9.11 (#​15647) (8447402)

v2.9.11

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Bug Fixes

• storage: Fix bug in cache of the index object client(#​10585).

Miscellaneous Chores

• promtail switch promtails base image from debian to ubuntu (backport release-2.9.x) (#​15210) (ae1fb5a)
• docker: Update Docker to 23.0.15 (#).
• lamba-promtail: Lamba-promtail updates, some of which address CVEs(#​14105).

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