chore(deps): update dependency spectron to v19

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
spectron	15.0.0 -> 19.0.0

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Release Notes

electron/spectron

v19.0.0

Compare Source

v18.0.0

Compare Source

v17.0.0

Compare Source

v16.0.0

Compare Source

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