Update ghcr.io/searxng/searxng:latest Docker digest to 6f3a875 (#761)

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

Author: renovate[bot]

searxng/docker-compose.yml

@@ -8,7 +8,7 @@ networks:
 
 services:
   searxng:
-    image: ghcr.io/searxng/searxng:latest@sha256:8d98d5c1b678714c3b20dacfab5ea5e3b67f79e50df6d5dbc92ed4f0a964ccbd
+    image: ghcr.io/searxng/searxng:latest@sha256:6f3a875c64bd804d1ccf2fe3c8df35e985b75ffbf0322f216544e79912fabab2
     restart: unless-stopped
     depends_on:
       - redis