feat: Use `SocketsHttpHandler` to configure `HttpClient` in .NET 6+ #5258

Job	Run time
Check if source files were modified, skip remaining jobs if not / Check if source files were modified, skip remaining jobs if not	18s
Validate shell scripts	18s
Build FullAgent and MSIInstaller	5m 49s
Build UnboundedIntegrationTests	1m 22s
Create RPM Package	1m 12s
Build IntegrationTests	1m 29s
Create Debian package	40s
Run Linux Container Tests / Run Linux Container Integration Tests	1m 33s
Run ArtifactBuilder	1s
Run Unbounded Tests	1s
Run IntegrationTests	1s
Check Test Matrix Status	8s
	12m 52s

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