Update windows-bindgen requirement from 0.55 to 0.56 #3416

Job	Run time
check-docs	23s
cross-targets (x86_64-unknown-illumos)	1m 7s
alternative_targets (ubuntu-latest, wasm32-unknown-emscripten)	24s
cross-tests (ubuntu-latest)	2m 9s
alternative_targets (ubuntu-latest, aarch64-apple-ios)	19s
features_check (ubuntu-latest)	3m 53s
no_std (ubuntu-latest, thumbv6m-none-eabi)	21s
rust_msrv (ubuntu-latest)	2m 16s
no_std (ubuntu-latest, x86_64-fortanix-unknown-sgx)	19s
alternative_targets (ubuntu-latest, aarch64-linux-android)	19s
rust_versions (ubuntu-latest, stable)	1m 14s
test_wasi (ubuntu-latest, wasm32-wasi)	34s
rust_versions (ubuntu-latest, beta)	1m 12s
test_wasm (ubuntu-latest)	33s
rust_versions (ubuntu-latest, nightly)	1m 24s
timezones (ubuntu-latest, ACST-9:30)	1m 38s
timezones (ubuntu-latest, EST4)	1m 31s
timezones (ubuntu-latest, UTC0)	1m 33s
timezones (ubuntu-latest, Asia/Katmandu)	1m 33s
timezones (macos-latest, ACST-9:30)	2m 5s
timezones (macos-latest, EST4)	2m 6s
timezones (macos-latest, UTC0)	1m 15s
timezones (macos-latest, Asia/Katmandu)	2m 1s
timezones (windows-latest, ACST-9:30)	2m 1s
timezones (windows-latest, EST4)	1m 55s
timezones (windows-latest, UTC0)	2m 6s
timezones (windows-latest, Asia/Katmandu)	1m 52s
	38m 3s

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