Update Helm release tempo-distributed to v1.26.1 (#1263)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

kustomize/bases/grafana-tempo/kustomization.yaml

@@ -5,7 +5,7 @@ namespace: observability
 helmCharts:
   - name: tempo-distributed
     repo: https://grafana.github.io/helm-charts
-    version: 1.23.2
+    version: 1.26.1
     releaseName: tempo
     namespace: observability
     valuesFile: helm-values.yaml