Bump dawidd6/action-download-artifact from 6 to 7 #1475

Job	Run time
Python 3.8 on macos-13	58s
pep8,packaging on linux, Rust stable	1m 15s
Python 3.8 on macos-latest	1m 30s
py312 on alpine	1m 6s
mypy on linux, Rust stable	56s
Python 3.13 on macos-13	1m 11s
Python 3.8 on win32	2m 25s
py312 on alpine:aarch64	1m 2s
py38 on linux, Rust stable	39s
Python 3.13 on macos-latest	38s
Python 3.13 on win32	3m 43s
py312 on ubuntu-rolling:aarch64	56s
py39 on linux, Rust stable	43s
Python 3.8 on win64	2m 9s
py310 on linux, Rust stable	40s
Python 3.13 on win64	3m 4s
py311 on linux, Rust stable	43s
py312 on linux, Rust stable	44s
py313 on linux, Rust stable	47s
pypy3 on linux, Rust stable	1m 11s
pypy3 on linux, Rust stable	1m 4s
py313 on linux, Rust 1.64.0	1m 25s
py313 on linux, Rust beta	51s
py313 on linux, Rust nightly	50s
all-green	2s
	30m 32s

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