Upgrade PostgreSQL to 16 for Hedgedoc

containers/hedgedoc.fish

@@ -10,6 +10,8 @@ mkdir -p $uploads_dir
 set -l db_container_name hedgedoc-postgres
 set -l db_container_dir $container_volumes_dir/postgres
 
+mkdir -p $db_container_dir
+
 podman-default-create \
     $db_container_name \
     --network traefik \
@@ -18,7 +20,7 @@ podman-default-create \
     -e POSTGRES_USER=hedgedoc \
     --env-file $container_volumes_dir/postgres.env \
     --label "io.containers.autoupdate=registry" \
-    docker.io/library/postgres:14
+    docker.io/library/postgres:16
 
 podman-default-create \
     $container_name \