Remove AWS Outposts section from validated partners list

[abhay-krishna]

Remove AWS Outposts section from validated partners list since EKS-A doesn't run on Outposts.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.40%. Comparing base (9da13b8) to head (40e62fa).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9286   +/-   ##
=======================================
  Coverage   72.40%   72.40%           
=======================================
  Files         589      589           
  Lines       46361    46361           
=======================================
+ Hits        33566    33569    +3     
+ Misses      11034    11032    -2     
+ Partials     1761     1760    -1     

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[abhay-krishna]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: abhay-krishna

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• docs/OWNERS [abhay-krishna]

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[abhay-krishna]

/cherrypick release-0.21

[eks-distro-pr-bot]

@abhay-krishna: #9286 failed to apply on top of branch "release-0.21":

Applying: Remove AWS Outposts section from validated partners list
Using index info to reconstruct a base tree...
M	docs/content/en/docs/overview/partner/_index.md
Falling back to patching base and 3-way merge...
Auto-merging docs/content/en/docs/overview/partner/_index.md
CONFLICT (content): Merge conflict in docs/content/en/docs/overview/partner/_index.md
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 Remove AWS Outposts section from validated partners list
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherrypick release-0.21

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