Update sonarr.sh

add update for v4

ct/sonarr.sh

@@ -53,6 +53,16 @@ function default_settings() {
 function update_script() {
 header_info
 if [[ ! -f /etc/apt/sources.list.d/sonarr.list ]]; then msg_error "No ${APP} Installation Found!"; exit; fi
+read -r -p "Are you updating Sonarr v4? <y/N> " prompt
+if [[ "${prompt,,}" =~ ^(y|yes)$ ]]; then
+  systemctl stop sonarr.service
+  wget -q -O SonarrV4.tar.gz 'https://services.sonarr.tv/v1/download/develop/latest?version=4&os=linux'
+  tar -xzf SonarrV4.tar.gz
+  cp -r Sonarr/* /usr/lib/sonarr/bin
+  rm -rf Sonarr SonarrV4.tar.gz
+  systemctl start sonarr.service
+  exit
+fi  
 msg_info "Updating $APP LXC"
 apt-get update &>/dev/null
 apt-get -y upgrade &>/dev/null