[internal/metadataproviders/azure] Fix memory leak on AKS (#32574) #52

Job	Run time
windows-unittest-matrix (receiver-0)	15m 40s
windows-unittest-matrix (receiver-1)	17m 26s
windows-unittest-matrix (receiver-2)	21m 13s
windows-unittest-matrix (receiver-3)	18m 13s
windows-unittest-matrix (processor)	15m 25s
windows-unittest-matrix (exporter-0)	21m 51s
windows-unittest-matrix (exporter-1)	16m 42s
windows-unittest-matrix (extension)	14m 37s
windows-unittest-matrix (connector)	12m 45s
windows-unittest-matrix (internal)	16m 1s
windows-unittest-matrix (pkg)	12m 41s
windows-unittest-matrix (cmd-0)	21m 41s
windows-unittest-matrix (cmd-1)	13m 8s
windows-unittest-matrix (other)	21m 32s
windows-unittest	4s
	3h 58m 59s

Provide feedback