chore(deps): update valkey/valkey docker tag to v9.1.1 (#1860)

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

Author: renovate[bot]

kubernetes/apps/tools/outline/app/helmrelease.yaml

@@ -62,7 +62,7 @@ spec:
           app:
             image:
               repository: valkey/valkey
-              tag: 9.1.0@sha256:8e8d64b405ce18f41b8e5ee20aa4687a8ed0022d1298f2ce31cdcf3a76e09411
+              tag: 9.1.1@sha256:3acc0687f2a2e1091fae6450d7842dd658c941338cf0a873ddd9e14b9e4ea4dd
     persistence:
       data:
         enabled: true