Bump chai from 4.3.10 to 5.0.0 #596

Job	Run time
Lint	41s
Create VSIX	38s
TypeScript Tests (ubuntu-latest)	28s
Tests (ubuntu-latest, 3.8)	1m 0s
TypeScript Tests (windows-latest)	53s
Tests (ubuntu-latest, 3.9)	1m 9s
Tests (ubuntu-latest, 3.10)	1m 20s
Tests (ubuntu-latest, 3.11)	58s
Tests (ubuntu-latest, 3.12-dev)	1m 7s
Tests (windows-latest, 3.8)	1m 31s
Tests (windows-latest, 3.9)	1m 41s
Tests (windows-latest, 3.10)	1m 48s
Tests (windows-latest, 3.11)	3m 8s
Tests (windows-latest, 3.12-dev)	1m 58s
	18m 20s

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