chore: bump upload-artifact to v4 #1192

Job	Run time
clippy-codegen	37s
format	19s
generate-public-api	1m 36s
clippy (async-std-surf)	1m 1s
clippy (tokio-hyper)	1m 5s
verify-codegen	1m 8s
clippy (tokio-hyper-rustls)	1m 12s
test (async-std-surf)	37s
test (tokio-hyper)	17s
clippy (tokio-hyper-rustls-webpki)	1m 4s
test (tokio-hyper-rustls)	35s
clippy (blocking)	1m 8s
test (tokio-hyper-rustls-webpki)	35s
clippy (blocking-rustls)	1m 4s
test (blocking)	19s
clippy (blocking-rustls-webpki)	1m 3s
test (blocking-rustls)	36s
test (blocking-rustls-webpki)	37s
	14m 53s

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