fix(opentelemetry-demo): wait for flagd before starting shipping - #2384

No file matched to [/home/runner/work/opentelemetry-helm-charts/opentelemetry-helm-charts/**/*requirements*.txt,/home/runner/work/opentelemetry-helm-charts/opentelemetry-helm-charts/**/*requirements*.in,/home/runner/work/opentelemetry-helm-charts/opentelemetry-helm-charts/**/*constraints*.txt,/home/runner/work/opentelemetry-helm-charts/opentelemetry-helm-charts/**/*constraints*.in,/home/runner/work/opentelemetry-helm-charts/opentelemetry-helm-charts/**/pyproject.toml,/home/runner/work/opentelemetry-helm-charts/opentelemetry-helm-charts/**/uv.lock,/home/runner/work/opentelemetry-helm-charts/opentelemetry-helm-charts/**/*.py.lock]. The cache will never get invalidated. Make sure you have checked out the target repository and configured the cache-dependency-glob input correctly.