Added wkhtmltopdf install support for Ubuntu 22.04

Real code to select correct wkhtmltopdf version for Ubuntu 22.04 installation. Note that 32-bit version of wkhtmltopdf is not available.

odoo_install.sh

@@ -51,12 +51,15 @@ ADMIN_EMAIL="odoo@example.com"
 ## https://github.com/odoo/odoo/wiki/Wkhtmltopdf ):
 ## https://www.odoo.com/documentation/16.0/administration/install.html
 
-WKHTMLTOX_X64="https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox_0.12.5-1.$(lsb_release -c -s)_amd64.deb"
-WKHTMLTOX_X32="https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox_0.12.5-1.$(lsb_release -c -s)_i386.deb"
-
-## For Ubuntu 22.04 uncomment to replace the 64 bit download link above with following:
-#WKHTMLTOX_X64="https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox_0.12.6-1.focal_amd64.deb"
-#(No 32 bit version release seems to exist)
+# Check if the operating system is Ubuntu 22.04
+if [[ $(lsb_release -r -s) == "22.04" ]]; then
+    WKHTMLTOX_X64="https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox_0.12.6-1.focal_amd64.deb"
+    #No 32 bit version available for Ubuntu 22.04
+else
+    # For older versions of Ubuntu
+    WKHTMLTOX_X64="https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox_0.12.5-1.$(lsb_release -c -s)_amd64.deb"
+    WKHTMLTOX_X32="https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox_0.12.5-1.$(lsb_release -c -s)_i386.deb"
+fi
 
 #--------------------------------------------------
 # Update Server
@@ -116,8 +119,6 @@ if [ $INSTALL_WKHTMLTOPDF = "True" ]; then
   fi
   sudo wget $_url
   sudo gdebi --n `basename $_url`
-  #For Ubuntu 22.04 replace the above line with
-  #sudo apt install ./wkhtmltox_0.12.6-1.focal_amd64.deb
   
   sudo ln -s /usr/local/bin/wkhtmltopdf /usr/bin
   sudo ln -s /usr/local/bin/wkhtmltoimage /usr/bin