chore(router): Update to axum 0.8 #3565

Job	Run time
cargo-deny check	23s
rustfmt	15s
check-external-types	1m 1s
check (ubuntu-latest)	2m 45s
clippy	1m 19s
check (macOS-latest)	2m 40s
codegen	43s
Interop Tests (ubuntu-latest)	55s
check (windows-latest)	4m 44s
Interop Tests (macOS-latest)	2m 34s
Interop Tests (windows-latest)	2m 48s
Check MSRV	48s
test (ubuntu-latest)	3m 17s
Check unused dependencies	4m 14s
test (macOS-latest)	4m 39s
test (windows-latest)	5m 9s
semver	54s
	39m 8s

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