Fix KPO unitest

[rajaths010494]

mock Kubernetes default client in cncf kubenetes operator test

[codecov]

Codecov Report

Merging #535 (05cb523) into main (ce075a9) will decrease coverage by 0.05%.
The diff coverage is n/a.

❗ Current head 05cb523 differs from pull request most recent head 965588f. Consider uploading reports for the commit 965588f to get more accurate results

@@            Coverage Diff             @@
##             main     #535      +/-   ##
==========================================
- Coverage   98.29%   98.24%   -0.06%     
==========================================
  Files          72       72              
  Lines        3996     3996              
==========================================
- Hits         3928     3926       -2     
- Misses         68       70       +2     

Impacted Files	Coverage Δ
astronomer/providers/http/sensors/http.py	80.00% <0.00%> (-10.00%)	⬇️

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