packaging: add scripts directory to the list of files to copy
packaging: add scripts directory to the list of files to copy

Since contrib/scripts/bindata.sh was added to compile the go-bindata.go
file, this directory needs to be added to the list of files to copy.
Without it this directory, running `make docker-image` errors out.

Fixes: 2566872676 ("contrib: add script for checking bindata")

Signed-off-by: André Martins <bc9800b9d52a24cce72a73dd528afed53f10e5fc@cilium.io>

eloycoto/cilium,tklauser/cilium,michi-covalent/cilium,tgraf/cilium,cilium/cilium,cilium-team/cilium,tgraf/cilium,tklauser/cilium,mskarbek/cilium,gumpt/cilium,eloycoto/cilium,scanf/cilium,tklauser/cilium,michi-covalent/cilium,michi-covalent/cilium,tgraf/cilium,mskarbek/cilium,scanf/cilium,tgraf/cilium,cilium/cilium,gumpt/cilium,mskarbek/cilium,scanf/cilium,gumpt/cilium,scanf/cilium,gumpt/cilium,gumpt/cilium,michi-covalent/cilium,eloycoto/cilium,tklauser/cilium,eloycoto/cilium,eloycoto/cilium,mskarbek/cilium,scanf/cilium,tklauser/cilium,scanf/cilium,cilium/cilium,eloycoto/cilium,tgraf/cilium,mskarbek/cilium,mskarbek/cilium,gumpt/cilium,eloycoto/cilium,scanf/cilium,cilium/cilium,michi-covalent/cilium,gumpt/cilium,cilium/cilium,tgraf/cilium,cilium-team/cilium