fix(deps): upgrade OpenAI stack and resolve dependency vulnerabilities

playground/nginx_container/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM nginx:1.27-alpine
+FROM nginx:1.30.6-alpine
 
 # Install openssl for auto-generating self-signed dev certificates and curl for healthchecks
 RUN apk add --no-cache openssl curl bash