feat(server): allow trace to be incremented in UpdateTestRun endpoint #4424

Job	Run time
Generate backend architecture graph	17s
Build docker image	4m 19s
config-e2e	1s
Agent unit tests	2m 27s
CLI unit tests	3m 3s
WebUI unit tests	3m 32s
API Server unit tests	5m 17s
WebUI End-to-end tests	0s
CLI e2e tests	0s
Test examples	0s
CLI smoke tests	0s
Tracetesting API Server	0s
	18m 56s

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