Bump K3s version for master

[brandond]

Proposed Changes

Updates k3s: k3s-io/k3s@68fbd1a...646e313

Types of Changes

version bump

Verification

Check version in go.mod

Testing

Linked Issues

User-Facing Change

Further Comments

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 23.00%. Comparing base (da45f2f) to head (6ba990c).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7582      +/-   ##
==========================================
+ Coverage   22.97%   23.00%   +0.02%     
==========================================
  Files          34       34              
  Lines        3499     3500       +1     
==========================================
+ Hits          804      805       +1     
  Misses       2647     2647              
  Partials       48       48              

Flag	Coverage Δ
inttests	8.74% <100.00%> (+0.02%)	⬆️
unittests	16.32% <0.00%> (-0.01%)	⬇️

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