Patch xdg-open downstream to fix egrep warning
    
    There are 4 upstream PRs to fix the usage of egrep in xdg-open, and the
    first PR is 3 years old.
    
    As it seems this issue will be around for still a long time, the propose
    is to fix it dowstream, patching "xdg-open" to use 'grep -E' so no
    warning is raised.
    
    Fixes: https://bugzilla.redhat.com/2140197
    
    Signed-off-by: Rafael Guterres Jeffman <rjeffman@redhat.com>