upgrade to bevy 0.12 #499

Job	Run time
Formatter check	20s
Clippy check (ubuntu-latest)	1m 5s
Check documentation	26s
Clippy check (ubuntu-latest, manage_clipboard)	1m 9s
Clippy check (wasm32) (immutable_ctx)	38s
Clippy check (wasm32) (manage_clipboard)	44s
Clippy check (ubuntu-latest, open_url)	1m 5s
Clippy check (wasm32) (open_url)	23s
Clippy check (ubuntu-latest, manage_clipboard,open_url)	41s
Clippy check (wasm32) (manage_clipboard,open_url)	28s
Clippy check (macos-latest)	38s
Clippy check (macos-latest, manage_clipboard)	25s
Clippy check (macos-latest, open_url)	1m 8s
Run tests	3m 13s
Clippy check (macos-latest, manage_clipboard,open_url)	30s
Clippy check (windows-latest)	2m 4s
Clippy check (windows-latest, manage_clipboard)	3m 5s
Clippy check (windows-latest, open_url)	2m 23s
Clippy check (windows-latest, manage_clipboard,open_url)	3m 31s
	23m 56s

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