Fix release version fetching (#8537)

Author: tremor021

ct/alpine-teamspeak-server.sh

@@ -27,7 +27,7 @@ function update_script() {
     exit 1
   fi
 
-  set +o pipefail && RELEASE=$(curl -fsSL https://teamspeak.com/en/downloads/#server | sed -n 's/.teamspeak3-server_linux_amd64-([0-9]+.[0-9]+.[0-9]+)./\1/p' | head -1) && set -o pipefail
+  set +o pipefail && RELEASE=$(curl -fsSL https://teamspeak.com/en/downloads/#server | sed -n 's/.*teamspeak3-server_linux_amd64-\([0-9.]*[0-9]\).*/\1/p' | head -1) && set -o pipefail
 
   if [ "${RELEASE}" != "$(cat ~/.teamspeak-server)" ] || [ ! -f ~/.teamspeak-server ]; then
     msg_info "Updating ${APP} LXC"

install/alpine-teamspeak-server-install.sh

@@ -20,7 +20,7 @@ $STD apk add --no-cache \
   libc6-compat
 msg_ok "Installed dependencies"
 
-RELEASE=$(curl -fsSL https://teamspeak.com/en/downloads/#server | sed -n 's/.*teamspeak3-server_linux_amd64-\([0-9.]\+\).*/\1/p' | head -1)
+RELEASE=$(curl -fsSL https://teamspeak.com/en/downloads/#server | sed -n 's/.*teamspeak3-server_linux_amd64-\([0-9.]*[0-9]\).*/\1/p' | head -1)
 msg_info "Installing Teamspeak Server v${RELEASE}"
 mkdir -p /opt/teamspeak-server
 cd /opt/teamspeak-server