Support limited JS templates in `Brioche.download` and other statics … #350

Job	Run time
Run checks	3m 24s
Run tests (ubuntu-22.04)	17m 38s
Build artifacts (x86_64-linux, ubuntu-22.04, x86_64-unknown-linux-gnu)	7m 40s
Run tests (macos-14)	10m 14s
Build artifacts (x86_64-macos, macos-14, x86_64-apple-darwin)	6m 7s
Build artifacts (aarch64-macos, macos-14, aarch64-apple-darwin)	6m 0s
Push artifacts	13s
	51m 16s

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