Revert rke2-ingress-nginx bump back to v1.9.6

[dereknola]

Proposed Changes

• Revert back from v1.10.1 to v1.9.6 of ingress-nginx, the arm64 images are not stable.

Types of Changes

Bugfix/revert

Verification

See linked issue

Testing

None of our automated testing covers arm64, nor does upstream have automated arm64 tests

Linked Issues

#6235

User-Facing Change

Further Comments

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Report is 127 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #6238   +/-   ##
=========================================
  Coverage          ?   26.09%           
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  Files             ?       32           
  Lines             ?     2698           
  Branches          ?        0           
=========================================
  Hits              ?      704           
  Misses            ?     1948           
  Partials          ?       46           

Flag	Coverage Δ
inttests	9.82% <ø> (?)
unittests	18.57% <ø> (?)

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