[native_assets_builder] Don't pass in the whole environment #1008

Job	Run time
build (ubuntu, stable, native_assets_builder, false)	5m 21s
build (ubuntu, stable, native_assets_cli, false)	1m 38s
build (ubuntu, stable, native_toolchain_c, false)	2m 1s
build (ubuntu, dev, native_assets_builder, false)	5m 11s
build (ubuntu, dev, native_assets_cli, false)	2m 18s
build (ubuntu, dev, native_toolchain_c, false)	2m 4s
build (macos, stable, native_assets_builder, false)	5m 28s
build (macos, stable, native_assets_cli, false)	1m 0s
build (macos, stable, native_toolchain_c, false)	2m 22s
build (macos, dev, native_assets_builder, false)	5m 24s
build (macos, dev, native_assets_cli, false)	1m 55s
build (macos, dev, native_toolchain_c, false)	1m 57s
build (windows, stable, native_assets_builder, false)	7m 24s
build (windows, stable, native_assets_cli, false)	3m 56s
build (windows, stable, native_toolchain_c, false)	4m 23s
build (windows, dev, native_assets_builder, false)	7m 34s
build (windows, dev, native_assets_cli, false)	2m 37s
build (windows, dev, native_toolchain_c, false)	4m 1s
coverage-finished	2s
	1h 6m 36s

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