chore(deps): update ghcr.io/open-feature/sync-testbed docker tag to v0.4.4

Author: renovate[bot]

.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:v0.4.3
+        image: ghcr.io/open-feature/sync-testbed:v0.4.4
         ports:
           - 9090:9090