Makefile | Include `dev` packages with future stable releases

[atc0005]

I originally intended the dev packages as a preview of upcoming features that have yet to land in a stable release. In reality, I'm generating dev packages from a stable tag alongside stable release builds. I then install both:

1. deploy dev package
2. wait long enough for all "test" certificate checks to complete as expected using the check_cert_dev plugin
3. deploy stable release package

Since I plan to use this workflow for the foreseeable future I will likely modify the Makefile release-build recipe here:

check-cert/Makefile

Lines 742 to 745 in a0102ca

	.PHONY: release-build
	## release-build: generates stable build assets for public release
	release-build: clean windows linux-x86 packages-stable linux-x64-compress linux-x64-checksums links
	@echo "Completed all tasks for stable release build"

to include packages-dev so that dev packages are also provided with future releases.