Update actions/checkout in GitHub Actions workflows to v4 (#3837) #1765

Job	Run time
build_benchmarks	47s
build_examples	52s
build_nightly	1m 23s
Check	51s
Verify that web-sys is compiled correctly	45s
dist_linux_x86_64_musl	52s
Clippy	52s
dist_linux_aarch64_gnu	53s
dist_macos_aarch64	47s
dist_macos_x86_64	46s
dist_windows	45s
doc_api	50s
doc_book	10s
Rustfmt	8s
Run js-sys crate tests	51s
Run native tests	52s
Build and test the deno example	57s
Run wasm-bindgen crate tests with multithreading enabled	1m 22s
Test TypeScript output of wasm-bindgen	51s
Run UI compile-fail tests	35s
Run wasm-bindgen crate tests (unix)	50s
Run web-sys crate tests	19s
Run wasm-bindgen-webidl crate tests	1s
test_examples	1s
deploy	1s
	17m 21s

Provide feedback