Use Println instead of Print for kubectl output

[g-gaston]

Description of changes: This messes up with the terminal output and the go test output when the printed text doesn't end with a break line.

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[codecov[bot]]

Codecov Report

Merging #2900 (fecc391) into main (6465694) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #2900   +/-   ##
=======================================
  Coverage   61.80%   61.80%           
=======================================
  Files         327      327           
  Lines       26457    26457           
=======================================
  Hits        16352    16352           
  Misses       8837     8837           
  Partials     1268     1268           

Impacted Files	Coverage Δ
pkg/curatedpackages/packageclient.go	80.26% <100.00%> (ø)

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[d8660091]

/lgtm

[vivek-koppuru]

@a-cool-train Is this a breaking change for you? Currently, does the output properly end with an extra line, and this would just add another?

[a-cool-train]

@a-cool-train Is this a breaking change for you? Currently, does the output properly end with an extra line, and this would just add another?

This doesn't break but it adds an extra line to the output.

[g-gaston]

Closing in favor of a different fix @a-cool-train has in mind