build(deps): bump actions/download-artifact from 7.0.0 to 8.0.0 in the action-dependencies group #3872

Job	Run time
test / Lint Test	32s
test-with-sslib-main / Test securesystemslib main branch (not a merge blocker)	22s
test / Tests (3.11, ubuntu-latest)	19s
test / Tests (3.x, macos-latest)	19s
test / Tests (3.x, windows-latest)	1m 40s
test / Tests (3.10, ubuntu-latest)	21s
test / Tests (3.13, ubuntu-latest)	22s
test / Tests (3.14, ubuntu-latest)	24s
test / Tests (3.12, ubuntu-latest)	24s
test / All tests passed	3s
test / coveralls-fin	11s
	4m 57s

Provide feedback