Bump dependencies

[dasanra]

Bump dependencies with minor changes

Remove deprecated dependency for electron
Migrate truffle-contract to latest @truffle/contract

[github-actions]

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[rmeissner]

should we update truffle contracts too? (we are using a deprecated version)

Edit:
https://www.npmjs.com/package/@truffle/contract is the new one (see https://www.npmjs.com/package/truffle-contract)

[github-actions]

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Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	2	N/A

• Result: ✅ success
• Annotations: 0 total

---

^{Report generated by eslint-plus-action}

[dasanra]

@rmeissner will check. I forgot to bump it because of the naming change, if nothing breaks will bump it to the most recent version I can

[ghost]

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[rmeissner]

I think it should not break stuff, but we need to update some imports ... might make sense to have this in a separate PR if it is too much. If you prefer I can create an issue ;)

[ghost]

Travis automatic deployment:
https://pr1478--safereact.review.gnosisdev.com/app