Update nginx Docker tag to v1.29.8

Author: renovate[bot]

docker-compose/docker-compose.yml

@@ -93,7 +93,7 @@ services:
       - ide
 
   nginx:
-    image: nginx:1.29.7-alpine-slim
+    image: nginx:1.29.8-alpine-slim
     depends_on:
       config-generator:
         condition: service_completed_successfully