Bump the serilog-testing group with 1 update #2008

Job	Run time
build (windows-latest, Release)	12m 36s
build (ubuntu-latest, Release)	6m 55s
build (macos-latest, Release)	9m 6s
build (windows-latest, Debug)	11m 31s
build (macos-latest, Debug)	5m 47s
build (ubuntu-latest, Debug)	6m 33s
publish-coverage	-1s
	52m 27s

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