Bump coverlet.collector in /tests/NHapi.NUnit.SourceGeneration #427

Job	Run time
Build And Test ubuntu-latest	10m 49s
Build And Test windows-latest	5m 57s
Build And Test macOS-latest	6m 18s
Publish Code Coverage Results	1m 23s
Report Benchmark Results	6s
	24m 33s

Provide feedback