build: update vsc version to 6.8

[Alive-Fish]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.94%. Comparing base (11924e7) to head (e601f21).
⚠️ Report is 4 commits behind head on release/6.8.

Additional details and impacted files

@@               Coverage Diff               @@
##           release/6.8   #15696      +/-   ##
===============================================
- Coverage        92.95%   92.94%   -0.02%     
===============================================
  Files              623      623              
  Lines            38443    38443              
  Branches          6957     7128     +171     
===============================================
- Hits             35735    35729       -6     
- Misses            1979     1983       +4     
- Partials           729      731       +2     

see 1 file with indirect coverage changes

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