Bump Microsoft.TestPlatform.ObjectModel from 17.11.1 to 17.12.0 (#858) #1474

Job	Run time
YAML Tests (Released OpenSearch) (2.16.0)	4m 0s
YAML Tests (Released OpenSearch) (2.14.0)	4m 13s
YAML Tests (Released OpenSearch) (2.12.0)	4m 15s
YAML Tests (Released OpenSearch) (2.10.0)	3m 9s
YAML Tests (Released OpenSearch) (2.8.0)	3m 14s
YAML Tests (Released OpenSearch) (2.6.0)	3m 16s
YAML Tests (Released OpenSearch) (2.4.1)	3m 32s
YAML Tests (Released OpenSearch) (2.2.1)	3m 22s
YAML Tests (Released OpenSearch) (2.0.1)	3m 10s
YAML Tests (Released OpenSearch) (1.3.14)	3m 37s
YAML Tests (Released OpenSearch) (1.2.4)	2m 58s
YAML Tests (Released OpenSearch) (1.1.0)	3m 0s
YAML Tests (Unreleased OpenSearch) (1.x, 11)	6m 46s
YAML Tests (Unreleased OpenSearch) (2.x, 17)	9m 44s
YAML Tests (Unreleased OpenSearch) (main, 21)	9m 33s
	1h 7m 49s

Provide feedback