fix: correct clockSkew value when reading duration

[pbintcha]

Definition of Ready

Correct clockSkew value when reading duration Fixes #187

• [x] Short description of the feature/issue is added in the pr description
• [x] PR is linked to the corresponding user story
• [x] Acceptance criteria are met
• [x] All open todos and follow ups are defined in a new ticket and justified
• [x] Deviations from the acceptance criteria and design are agreed with the PO and documented.
• [x] No debug or dead code
• [x] My code has no repetitions
• [x] All non-functional requirements are met
• [x] The generic lifecycle acceptance test passes for affected resources.
• [x] Examples are up-to-date and meaningful. The provider version is incremented.
• [x] Docs are generated.
• [x] Code is generated where possible.

[dmytrum]

@stebenz Is this going to be released as part of some patch version for TF provider?