chore(deps): update ghcr.io/open-feature/flagd-testbed-unstable docker tag to v0.5.2 (#781)

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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -42,7 +42,7 @@ jobs:
           ports:
             - 8013:8013
         flagd-unstable:
-          image: ghcr.io/open-feature/flagd-testbed-unstable:v0.5.1
+          image: ghcr.io/open-feature/flagd-testbed-unstable:v0.5.2
           ports:
             - 8014:8013
         sync: