Bump hardened-kubernetes to v1.21.3-rke2r2

[brandond]

Proposed Changes

Bump hardened-kubernetes to v1.21.3-rke2r2

Types of Changes

Bugfix

Verification

kubectl version

Linked Issues

• Cluster is stuck in upgrading state when upgrading to v1.21.3-rc4+rke2r2 #1580

Further Comments

[codecov-commenter]

Codecov Report

Merging #1582 (b47c78f) into master (3defe35) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #1582   +/-   ##
======================================
  Coverage    7.78%   7.78%           
======================================
  Files          21      21           
  Lines        1863    1863           
======================================
  Hits          145     145           
  Misses       1696    1696           
  Partials       22      22           

Flag	Coverage Δ
unittests	7.78% <ø> (ø)

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