fix CI issues #130

Job	Run time
Clippy	2m 56s
Build Wasm Examples (wasm-yew-minimal)	55s
Build Examples (3d_charts)	29s
Code Coverage	1m 43s
Build Examples (basic_charts)	27s
Rustfmt	13s
Build Examples (custom_controls)	27s
Tests (ubuntu-latest)	6m 47s
Build Examples (financial_charts)	29s
Tests (windows-latest)	3m 42s
Build Examples (images)	38s
Tests (macos-latest)	1m 51s
Build Examples (kaleido)	1m 31s
Build Examples (maps)	27s
Build Examples (ndarray)	30s
Build Examples (scientific_charts)	26s
Build Examples (shapes)	32s
Build Examples (subplots)	25s
	24m 28s

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