use mock configuration in unit test (okta#407)

Co-authored-by: Bryan Apellanes <[email protected]>

Release 2.0.0 (okta#368)

* Multitarget .NET frameworks (okta#358)
* Upgrade System.Interactive.Async to the latest version and fix breaking changes.
* Upgrade target version to .NET Standard 2.0.
* Multitarget .NET Core 2.x and 3.x in unit test project.
* Add support for OAuth (okta#360)
* Use built-in retry strategy by default. (okta#363)
* Small miscellaneous fixes (okta#361)
* Add sanity check for strings before casting to Date. Fix okta#330.
* Add null checking before concat response headers. Fix okta#344 and OKTA-260243.
* Deserialize custom attributes formatted as date strings as strings. Fix OKTA-276780.
* Add "jti" claim when generating the JWT. (okta#362)
* Add workaround for runtime reporting issue when using .NET Core 2.x. (okta#366)

 Update flexibleConfiguration dependency due to vulnerability. (okta#365

)

* Update flexibleConfiguration dependency due to vulnerability.
* Update project version to 1.4.2.
* Skip 2 log ITs due to rate limit. This will be fixed once we set the default built-in strategy by default which is already merged into release 2.0.0 branch.

Update project version to 1.4.1 (okta#343)

Clone request in retry strategy (okta#342)

Add request cloning in between retries.

Update project version to 1.3.0. (okta#338)

Fixed typo (okta#328)

Bump project version to 1.2.1. (okta#305)

Bump minor version. (okta#295)

Bump openAPI version to 1.6.0 (okta#278)

* Add policies module
* Bump project version to 1.1.0