build(dev-deps): bump Electron versions to latest for each major

[dsanders11]

This also bumps the standalone electron version in devDependencies to the latest stable line. This should hopefully clear out some Dependabot alerts - it gets real confused on this repo due to the multiple majors of Electron.

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	electron@​43.0.0 ⏵ 40.10.6	-5	-15
	electron@​43.0.0 ⏵ 41.10.5	-5
	electron@​43.0.0 ⏵ 43.4.0	+1
	electron@​43.0.0 ⏵ 42.9.0	+1

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