feat(client): Adds wither for cache version storage

[silasjoisten]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.73%. Comparing base (abc3162) to head (c13a6fc).

Files with missing lines	Patch %	Lines
src/StoryblokClient.php	0.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master      #70      +/-   ##
============================================
- Coverage     93.90%   93.73%   -0.18%     
- Complexity      463      464       +1     
============================================
  Files            73       73              
  Lines          1624     1627       +3     
============================================
  Hits           1525     1525              
- Misses           99      102       +3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.