feat!: remove T: Transport from public APIs #5613

Job	Run time
doctest	1m 5s
test ubuntu-latest stable --no-default-features	1m 28s
check no_std	14s
clippy	16s
test ubuntu-latest stable	1m 41s
docs	33s
test ubuntu-latest stable --all-features	2m 5s
feature-checks	3m 48s
fmt	12s
test ubuntu-latest nightly --no-default-features	1m 6s
wasm-unknown	55s
wasm-wasi	1m 11s
test ubuntu-latest nightly	1m 20s
test ubuntu-latest nightly --all-features	1m 59s
test ubuntu-latest 1.81 --no-default-features	52s
test ubuntu-latest 1.81	43s
test windows-latest stable --no-default-features	4m 21s
test windows-latest stable	5m 3s
test windows-latest stable --all-features	5m 14s
test windows-latest nightly --no-default-features	4m 5s
test windows-latest nightly	2m 46s
test windows-latest nightly --all-features	4m 14s
test windows-latest 1.81 --no-default-features	2m 57s
test windows-latest 1.81	2m 2s
deny / cargo deny check	20s
ci success	2s
	50m 32s

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