[Automated] Update Playground Manifests (dotnet#12855)

Co-authored-by: davidfowl <davidfowl@users.noreply.github.com>

Author: github-actions[bot]

playground/withdockerfile/WithDockerfile.AppHost/dynamic-sync.Dockerfile

@@ -1,7 +1,7 @@
 FROM mcr.microsoft.com/oss/go/microsoft/golang:1.23 AS builder
 WORKDIR /app
 COPY . .
-RUN echo "Built at 20251108162046" > /build-info.txt
+RUN echo "Built at 20251109161808" > /build-info.txt
 RUN go build -o qots .
 
 FROM mcr.microsoft.com/cbl-mariner/base/core:2.0