fix(deps): update module github.com/grafana/loki/v3 to v3.6.8 (#128)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [github.com/grafana/loki/v3](https://redirect.github.com/grafana/loki)
| `v3.6.7` → `v3.6.8` |
![age](https://developer.mend.io/api/mc/badges/age/go/github.com%2fgrafana%2floki%2fv3/v3.6.8?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/go/github.com%2fgrafana%2floki%2fv3/v3.6.7/v3.6.8?slim=true)
|

---

> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
Dashboard](../issues/43) for more information.

---

### Release Notes

<details>
<summary>grafana/loki (github.com/grafana/loki/v3)</summary>

###
[`v3.6.8`](https://redirect.github.com/grafana/loki/releases/tag/v3.6.8)

[Compare
Source](https://redirect.github.com/grafana/loki/compare/v3.6.7...v3.6.8)

##### Features

- Upgrade `go.opentelemetry.io/otel/sdk` from v1.38.0 to v1.40.0
([#&#8203;21115](https://redirect.github.com/grafana/loki/issues/21115))
([d1ab148](https://redirect.github.com/grafana/loki/commit/d1ab148aa279e9e5263f699fa1b1a0e1eec14f1a))
- Upgrade Go to 1.25.8 (release-3.6.x)
([#&#8203;21240](https://redirect.github.com/grafana/loki/issues/21240))
([10d2666](https://redirect.github.com/grafana/loki/commit/10d266699420c158410e5af2521fff6ac4440d61))
- Upgrade Go used by querytee/promtail to 3.6
([#&#8203;21244](https://redirect.github.com/grafana/loki/issues/21244))
([41a4e0c](https://redirect.github.com/grafana/loki/commit/41a4e0c702d35c52181ffb32d34bf8ad98cd7717))
- Use different debian version for fluent-bit
([#&#8203;21247](https://redirect.github.com/grafana/loki/issues/21247))
([138c391](https://redirect.github.com/grafana/loki/commit/138c391fd0237b8bf1eb9ecf9eb14d8ce04727c5))

##### Bug Fixes

- **deps:** update module github.com/buger/jsonparser to v1.1.2
\[security] (release-3.6.x)
([#&#8203;21201](https://redirect.github.com/grafana/loki/issues/21201))
([3185466](https://redirect.github.com/grafana/loki/commit/318546620179a198d9af21baab9c601f5cc367c1))
- **deps:** update module go.opentelemetry.io/otel/sdk to v1.40.0
\[security] (release-3.6.x)
([#&#8203;20887](https://redirect.github.com/grafana/loki/issues/20887))
([d267ad3](https://redirect.github.com/grafana/loki/commit/d267ad368873ab3886519b975c86d76ded05741b))
- **deps:** update module google.golang.org/grpc to v1.79.3 \[security]
(release-3.6.x)
([#&#8203;21193](https://redirect.github.com/grafana/loki/issues/21193))
([87dff41](https://redirect.github.com/grafana/loki/commit/87dff4138d72c6616c47bcd2d46f04692af8d01f))

</details>

---

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go.mod

@@ -15,7 +15,7 @@ require (
 	github.com/golang/snappy v1.0.0
 	github.com/grafana/dskit v0.0.0-20260324093927-3167f499dfc0
 	github.com/grafana/loki/pkg/push v0.0.0-20260106103740-2203c1d8e8fa
-	github.com/grafana/loki/v3 v3.6.7
+	github.com/grafana/loki/v3 v3.6.8
 	github.com/grafana/regexp v0.0.0-20250905093917-f7b3be9d1853
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.23.2

go.sum

@@ -276,8 +276,8 @@ github.com/grafana/jsonparser v0.0.0-20241004153430-023329977675 h1:U94jQ2TQr1m3
 github.com/grafana/jsonparser v0.0.0-20241004153430-023329977675/go.mod h1:796sq+UcONnSlzA3RtlBZ+b/hrerkZXiEmO8oMjyRwY=
 github.com/grafana/loki/pkg/push v0.0.0-20260106103740-2203c1d8e8fa h1:AZOG7GSmXIfwqleilgdn7p+ASgn7xpr9uDXsfcLdnOA=
 github.com/grafana/loki/pkg/push v0.0.0-20260106103740-2203c1d8e8fa/go.mod h1:QI4O+SBP6/7F3KW9fIb8c6Gzs10XlUzy8QMzTHGfKLI=
-github.com/grafana/loki/v3 v3.6.7 h1:Z38eMgCD9INnl1Dw43omyrZ32a48c5gnran2Vgrlk4o=
-github.com/grafana/loki/v3 v3.6.7/go.mod h1:fyXTskE3nLwN0cc/nPnafGGgmigc5Z1cGSH7s/u6uWE=
+github.com/grafana/loki/v3 v3.6.8 h1:/jPifDHi/BGDvRE5EIAoTSKcwES3q7+MJw/LRbuAaWk=
+github.com/grafana/loki/v3 v3.6.8/go.mod h1:4rOcS+lxGB7Zg6Rj/EB1pLjGljmoUsoKoEyuXb9oi4I=
 github.com/grafana/memberlist v0.3.1-0.20251126142931-6f9f62ab6f86 h1:aTwfQuroOmOr//QEn9J1MtC4R4CPR9/IbUd8hZrbWKo=
 github.com/grafana/memberlist v0.3.1-0.20251126142931-6f9f62ab6f86/go.mod h1:h60o12SZn/ua/j0B6iKAZezA4eDaGsIuPO70eOaJ6WE=
 github.com/grafana/otel-profiling-go v0.5.1 h1:stVPKAFZSa7eGiqbYuG25VcqYksR6iWvF3YH66t4qL8=