chore(deps): update ghcr.io/open-feature/sync-testbed docker tag to v0.5.5 (#853)

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

Author: renovate[bot]

Diff for: .github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
           - 8014:8013
       # sync-testbed for flagd in-process provider e2e tests
       sync:
-        image: ghcr.io/open-feature/sync-testbed:v0.5.4
+        image: ghcr.io/open-feature/sync-testbed:v0.5.5
         ports:
           - 9090:9090
       # sync-testbed for flagd in-process provider reconnect e2e tests

Diff for: providers/flagd/docker-compose.yaml

@@ -8,7 +8,7 @@ services:
     ports:
       - 8014:8013
   flagd-sync:
-    image: ghcr.io/open-feature/sync-testbed:v0.5.4
+    image: ghcr.io/open-feature/sync-testbed:v0.5.5
     ports:
       - 9090:9090
   flagd-sync-unstable: