chore(deps): update ghcr.io/flexget/flexget docker tag to v3.15.31 (#2252)

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

Author: renovate[bot]

kubernetes/download/flexget/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: "ghcr.io/flexget/flexget"
-  tag: "3.15.30@sha256:ab495b4113545da69d7adef9868e1d73b7fc84a4cdc5dd1565cd3eb44dbfc94c"
+  tag: "3.15.31@sha256:89a2fc2b0e6cb0936b12b552050ccc4f3697efd4a9af7f80f2e56e5e21be9363"
 
 ports: 
 - name: main