Update passgen.sh

Author: magenx

passgen.sh

@@ -15,3 +15,4 @@ PASSWORD=$(head -c 500 /dev/urandom | tr -dc 'a-zA-Z0-9@%^&?-' | fold -w 32 | he
  fi
 echo "${SERVICE}_PASSWORD='${PASSWORD}'" >> .env
 done
+echo "INDEXER_PASSWORD='$(head -c 500 /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 20 | head -n 1)'" >> .env