Update kavita-install.sh

fix unprivileged install

install/kavita-install.sh

@@ -22,9 +22,7 @@ msg_ok "Installed Dependencies"
 msg_info "Installing Kavita"
 cd /opt
 RELEASE=$(curl -s https://api.github.com/repos/Kareadita/Kavita/releases/latest | grep "tag_name" | awk '{print substr($2, 2, length($2)-3) }')
-wget -q https://github.com/Kareadita/Kavita/releases/download/$RELEASE/kavita-linux-x64.tar.gz
-tar -xvzf kavita-linux-x64.tar.gz &>/dev/null
-rm kavita-linux-x64.tar.gz
+$STD tar -xvzf <(curl -fsSL https://github.com/Kareadita/Kavita/releases/download/$RELEASE/kavita-linux-x64.tar.gz) --no-same-owner
 msg_ok "Installed Kavita"
 
 msg_info "Creating Service"