chore(deps): update nginxproxy/acme-companion docker tag to v2.6.3 (#9)

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

Author: renovate[bot]

docker-compose.yml

@@ -26,7 +26,7 @@ services:
 
   acme-companion:
     # for SSL certificates generation
-    image: nginxproxy/acme-companion:2.6.1
+    image: nginxproxy/acme-companion:2.6.3
     container_name: nginx-proxy-acme
     environment:
       DEFAULT_EMAIL: letsencrypt@frsource.org