Bump the serilog-testing group with 1 update (#1282) #2049

Job	Run time
build (ubuntu-latest, Debug)	6m 53s
build (macos-latest, Release)	6m 39s
build (windows-latest, Release)	10m 30s
build (ubuntu-latest, Release)	7m 19s
build (windows-latest, Debug)	11m 40s
build (macos-latest, Debug)	11m 28s
publish-coverage	0s
	54m 29s

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