Helm: Fix GrafanaAgent tolerations scope (#10813)

**What this PR does / why we need it**:
`monitoring.selfMonitoring.grafanaAgent.tolerations` was evaluated
inside a wrong scope in the `GrafanaAgent` template, thus having no
effect at all.

**Which issue(s) this PR fixes**:
n/a

**Special notes for your reviewer**:
Fixes an issue with my first (ever)
[PR](#10613) that I thought was
rather trivial but somehow turned out not to be. At least, regarding my
inability to correctly count `with` / `end` scope markers... :(

**Checklist**
- [X] Reviewed the
[`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md)
guide (**required**)
- [ ] Documentation added
- [ ] Tests updated
- [X] `CHANGELOG.md` updated
- [ ] If the change is worth mentioning in the release notes, add
`add-to-release-notes` label
- [ ] Changes that require user attention or interaction to upgrade are
documented in `docs/sources/setup/upgrade/_index.md`
- [X] For Helm chart changes bump the Helm chart version in
`production/helm/loki/Chart.yaml` and update
`production/helm/loki/CHANGELOG.md` and
`production/helm/loki/README.md`. [Example
PR](d10549e)

---------

Co-authored-by: Michel Hollands <[email protected]>

production/helm/loki/CHANGELOG.md

@@ -13,7 +13,12 @@ Entries should include a reference to the pull request that introduced the chang
 
 [//]: # (<AUTOMATED_UPDATES_LOCATOR> : do not remove this line. This locator is used by the CI pipeline to automatically create a changelog entry for each new Loki release. Add other chart versions and respective changelog entries bellow this line.)
 
+## 5.28.0
+
+- [BUGFIX] Fix GrafanaAgent tolerations scope
+
 ## 5.27.0
+
 - [CHANGE] Bump `nginxinc/nginx-unpriviledged` image version to remediate [CVE-2023-4863](https://github.com/advisories/GHSA-j7hp-h8jx-5ppr)
 
 ## 5.26.0

production/helm/loki/Chart.yaml

@@ -3,7 +3,7 @@ name: loki
 description: Helm chart for Grafana Loki in simple, scalable mode
 type: application
 appVersion: 2.9.1
-version: 5.27.0
+version: 5.28.0
 home: https://grafana.github.io/helm-charts
 sources:
   - https://github.com/grafana/loki

production/helm/loki/README.md

@@ -1,6 +1,6 @@
 # loki
 
-![Version: 5.27.0](https://img.shields.io/badge/Version-5.27.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.9.1](https://img.shields.io/badge/AppVersion-2.9.1-informational?style=flat-square)
+![Version: 5.28.0](https://img.shields.io/badge/Version-5.28.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.9.1](https://img.shields.io/badge/AppVersion-2.9.1-informational?style=flat-square)
 
 Helm chart for Grafana Loki in simple, scalable mode
 

production/helm/loki/templates/monitoring/grafana-agent.yaml

@@ -29,11 +29,11 @@ spec:
       matchLabels:
         {{- include "loki.selectorLabels" $ | nindent 8 }}
   {{- end }}
+  {{- end }}
   {{- with .tolerations }}
   tolerations:
     {{- toYaml . | nindent 4 }}
   {{- end }}
-  {{- end }}
 
 ---