Update Helm release redis to v27

Author: renovate[bot]

pretix-helm/Chart.lock

@@ -4,6 +4,6 @@ dependencies:
   version: 16.7.27
 - name: redis
   repository: https://charts.bitnami.com/bitnami
-  version: 19.6.4
-digest: sha256:2d3aaa21f018ea007f098d99541123a8ddf0419c3ea5eb82cdaa735bc2b87b62
-generated: "2025-09-20T14:16:30.047125434Z"
+  version: 27.0.11
+digest: sha256:0a8d84675c52e27de5af43856fb1da682defa5211caf41b258e495eb192198f9
+generated: "2026-06-22T17:53:17.740046201Z"

pretix-helm/Chart.yaml

@@ -12,7 +12,7 @@ dependencies:
     repository: "https://charts.bitnami.com/bitnami"
     condition: postgresql.enabled
   - name: redis
-    version: "19.6.4"
+    version: "27.0.11"
     repository: "https://charts.bitnami.com/bitnami"
     condition: redis.enabled
 sources: