chore(deps): update valkey/valkey docker tag to v9.1.0 (#1635)

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: 9.0.4@sha256:8436e10bc65c94886a91d4415b6a6dfa9cb5a306fb3b996e5bb67cd2b4854193
+              tag: 9.1.0@sha256:4963247afc4cd33c7d3b2d2816b9f7f8eeebab148d29056c2ca4d7cbc966f2d9
     persistence:
       data:
         enabled: true