chore(deps): update helm chart memcached to v5.15.6 (#1179)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

charts/stable/gitea/Chart.yaml

@@ -11,7 +11,7 @@ dependencies:
 - condition: memcached.enabled
   name: memcached
   repository: https://charts.bitnami.com/bitnami
-  version: 5.15.5
+  version: 5.15.6
 deprecated: false
 description: Self hosted GIT repositories
 home: https://github.com/truecharts/apps/tree/master/charts/stable/gitea
@@ -34,7 +34,7 @@ sources:
 - https://github.com/go-gitea/gitea
 - https://hub.docker.com/r/gitea/gitea/
 type: application
-version: 1.0.14
+version: 1.0.15
 annotations:
   truecharts.org/catagories: |
     - GIT