fix CI issues #116

Job	Run time
Code Coverage	1m 44s
Rustfmt	15s
Build Wasm Examples (wasm-yew-minimal)	41s
Build Examples (3d_charts)	40s
Clippy	3m 16s
Build Examples (basic_charts)	29s
Tests (ubuntu-latest)	1m 41s
Build Examples (custom_controls)	27s
Tests (windows-latest)	3m 3s
Tests (macos-latest)	1m 51s
Build Examples (financial_charts)	26s
Build Examples (images)	41s
Build Examples (kaleido)	1m 19s
Build Examples (maps)	29s
Build Examples (ndarray)	28s
Build Examples (scientific_charts)	30s
Build Examples (shapes)	30s
Build Examples (subplots)	35s
	19m 5s

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