chore(deps): update ghcr.io/open-feature/sync-testbed docker tag to v0.4.9 (#590)

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

Author: renovate[bot]

Diff for: .github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
           - 8013:8013
       # sync-testbed for flagd-provider e2e tests
       sync:
-        image: ghcr.io/open-feature/sync-testbed:v0.4.8
+        image: ghcr.io/open-feature/sync-testbed:v0.4.9
         ports:
           - 9090:9090