Update ghcr.io/searxng/searxng:latest Docker digest to 771d475 (#792)

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@sha256:0355eac00e7ec52decf6586f03209a9aeb8c63a1ecbf200835fdb3e2247ced02
+    image: ghcr.io/searxng/searxng:latest@sha256:771d475fd7a6b9e254ad725220f977303cdb132fb2136401ea806553330214eb
     restart: unless-stopped
     depends_on:
       - redis