fix: update EncryptionConfiguration

[ritazh]

Reason for Change:

Update EncryptionConfig resources to EncryptionConfiguration using the stable API server encryption configuration as EncryptionConfig is deprecated.
Ref: https://kubernetes.io/docs/tasks/administer-cluster/kms-provider/#encrypting-your-data-with-the-kms-provider

Issue Fixed:

fixes: #2777

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

[codecov]

Codecov Report

Merging #2856 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2856      +/-   ##
==========================================
+ Coverage   72.47%   72.47%   +<.01%     
==========================================
  Files         140      140              
  Lines       25589    25612      +23     
==========================================
+ Hits        18545    18562      +17     
- Misses       5976     5981       +5     
- Partials     1068     1069       +1

[mboersma]

/lgtm

[mboersma]

See also #2727.

[ritazh]

@mboersma yea I saw! Thanks for updating the api server flag!