[examples/raytrace-parallel] Replace Bash with Python for Windows compatibility #1454

Job	Run time
Run wasm-bindgen crate tests (unix)	10m 29s
Clippy	7m 57s
Rustfmt	21s
Verify that web-sys is compiled correctly	1m 30s
Check	2m 30s
Run js-sys crate tests	4m 45s
Run native tests	3m 56s
Run wasm-bindgen crate tests with multithreading enabled	3m 59s
Test TypeScript output of wasm-bindgen	1m 43s
Run web-sys crate tests	6m 4s
Run wasm-bindgen-webidl crate tests	3m 26s
build_benchmarks	1m 29s
build_examples	6m 3s
build_nightly	3m 5s
dist_linux_aarch64_gnu	5m 11s
dist_linux_x86_64_musl	4m 12s
dist_macos_aarch64	3m 48s
dist_macos_x86_64	5m 11s
dist_windows	5m 15s
doc_api	1m 49s
doc_book	13s
Build and test the deno example	1m 41s
Run UI compile-fail tests	4m 59s
test_examples	4m 29s
deploy	1m 55s
	1h 36m 0s

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