[bug] Remove Explicit Dependency on System.Text.Json in OpenTelemetry.Exporter.OneCollector on net8.0

[keegan-caruso]

Component

OpenTelemetry.Exporter.OneCollector

Package Version

Package Name	Version
OpenTelemetry.Exporter.OneCollector	1.10.0

Runtime Version

net8.0

Description

On net8.0 and above, an explicit reference to System.Text.Json is not needed. It is included in the Framework. Removing this reference reduces explicit transitive dependencies.

Steps to Reproduce

Include OpenTelemetry.Exporter.OneCollector in a project using net8.0

Expected Result

OpenTelemetry.Exporter.OneCollector uses STJ from the framework and doesn't use an explicit dependency.

Actual Result

OpenTelemetry.Exporter.OneCollector uses STJ from an explicit dependency.

Additional Context

I can submit a fix if this is accepted.

[github-actions]

Tagging component owner(s).

@CodeBlanch