fix: update task script

task

@@ -151,10 +151,10 @@ function install-native() {
         # Source: https://gist.github.com/faniska/37f896d5e9de5fee925925d7caf3cb9e
         echo "Install wkhtmltopdf"
         sudo apt remove wkhtmltopdf
-        cd ~ || exit
         wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.4/wkhtmltox-0.12.4_linux-generic-amd64.tar.xz
         tar xvf wkhtmltox*.tar.xz
         sudo mv wkhtmltox/bin/wkhtmlto* /usr/bin
+        rm -rf wkhtmltox wkhtmltox-0.12.4_linux-generic-amd64.tar.*
         sudo apt-get install -y openssl build-essential libssl-dev libxrender-dev git-core libx11-dev libxext-dev libfontconfig1-dev libfreetype6-dev fontconfig
 
         echo "Install xmllint"