fix CI issues #114

Job	Run time
Build Wasm Examples (wasm-yew-minimal)	44s
Code Coverage	1m 45s
Clippy	2m 34s
Build Examples (3d_charts)	27s
Build Examples (basic_charts)	27s
Rustfmt	14s
Tests (ubuntu-latest)	1m 37s
Build Examples (custom_controls)	28s
Tests (windows-latest)	3m 56s
Build Examples (financial_charts)	38s
Tests (macos-latest)	1m 53s
Build Examples (images)	32s
Build Examples (kaleido)	1m 26s
Build Examples (maps)	29s
Build Examples (ndarray)	36s
Build Examples (scientific_charts)	30s
Build Examples (shapes)	29s
Build Examples (subplots)	27s
	19m 12s

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