chore(deps): update dependency grafana/loki to v3.6.15

[renovate]

This PR contains the following updates:

Package	Update	Change
grafana/loki	patch	v3.6.12 → v3.6.15

---

Release Notes

grafana/loki (grafana/loki)

v3.6.15

Compare Source

Bug Fixes

• queryrange: Preserve sketch in MergeLabels [release-3.6.x] (#​23771) (20087cd)

v3.6.14

Compare Source

Bug Fixes

• Backport WAL replay hang fix to release-3.6.x (#​21176) (#​23630) (355e2f3)
• ci: Backport deb/rpm packaging fix to release-3.6.x (#​23680) (#​23722) (d7ee4de)
• security/UNKNOWN/cmd/chunks-inspect: Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.6.x) (#​23615) (a6cc2e5)
• security/UNKNOWN/cmd/dataobj-inspect: Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.6.x) (#​23616) (a71c910)
• security/UNKNOWN/operator: Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.6.x) (#​23618) (59970a9)
• security/UNKNOWN/: Update module github.com/klauspost/compress to v1.18.7 [SECURITY] (release-3.6.x) (#​23614) (8308a12)

v3.6.13

Compare Source

Bug Fixes

• ci: Fix zizmor findings for operator-images in Loki 3.6 (#​22821) (050f742)
• ci: Helm CI warning fix (#​22606) (4bc2586)
• security/CRITICAL/clients/cmd/fluentd/docker: Update dependency fluentd to v1.19.3 [SECURITY] (release-3.6.x) (#​22694) (692f2b1)
• security/HIGH/: Bump Go to 1.26.5 to address CVE-2026-39822 and CVE-2026-42505 [SECURITY] (#​23398) (fc478e1)
• security/HIGH/pkg/push: Update module google.golang.org/grpc to v1.82.1 [SECURITY] (70f75b7)
• security/HIGH/: Update golang.org/x/net, golang.org/x/text and google.golang.org/grpc [SECURITY] (70f75b7)
• security/UNKNOWN/cmd/chunks-inspect: Update go toolchain directive to v1.25.12 [SECURITY] (release-3.6.x) (#​23131) (b327439)
• security/UNKNOWN/pkg/push: Update module golang.org/x/net to v0.56.0 [SECURITY] (70f75b7)
• security/UNKNOWN/pkg/push: Update module golang.org/x/text to v0.39.0 [SECURITY] (70f75b7)
• security/UNKNOWN/: Update module github.com/containerd/containerd/v2 to v2.0.10 [SECURITY] (release-3.6.x) (#​22479) (697bd83)
• security: Backport security updates to release-3.6.x (#​23403) (70f75b7)
• Update objstore to include fix for GCS Exists (#​23381) (87383d8)

---

Configuration

📅 Schedule: (UTC)

• 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 was generated by Mend Renovate. View the repository job log.