Update dependency chai to v4

This MR contains the following updates:

Package	Type	Update	Change
chai (source)	devDependencies	major	3.5.0 -> 4.3.6

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This MR has been generated by Renovate Bot.

mentioned in issue #1143 (closed)

added 9 commits

• e3526de5...ba722f3f - 8 commits from branch develop
• 6421394b - Update dependency chai to v4

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added 85 commits

• 6421394b...3fc9673a - 84 commits from branch develop
• a715d3e3 - Update dependency chai to v4

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added 11 commits

• a715d3e3...1baf87f1 - 10 commits from branch develop
• 2df25fc7 - Update dependency chai to v4

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changed the description

added 1 commit

• 7742b198 - Fix test errors

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merged

mentioned in commit 6b80ce12