cleanup workflows #437

Job	Run time
semver	28s
Clippy	3m 7s
Code Coverage	1m 49s
Build Examples (3d_charts)	24s
Rustfmt	15s
Build Examples (basic_charts)	28s
Tests (ubuntu-latest)	1m 46s
Build Examples (custom_controls)	26s
Tests (windows-latest)	4m 45s
Build Examples (financial_charts)	23s
Tests (macos-latest)	2m 3s
Build Wasm Examples (wasm-yew-minimal)	53s
Build Examples (images)	38s
Build Examples (kaleido)	1m 31s
Build Examples (maps)	25s
Build Examples (ndarray)	24s
Build Examples (scientific_charts)	24s
Build Examples (shapes)	25s
Build Examples (subplots)	25s
	20m 59s

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