Revert removal final newline

[jack-berg]

Final newline was removed in #5126 but shouldn't have been.

See this conversation.

[codecov]

Codecov Report

Base: 91.10% // Head: 91.10% // No change to project coverage 👍

Coverage data is based on head (a65f6da) compared to base (1e4a7be).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #5133   +/-   ##
=========================================
  Coverage     91.10%   91.10%           
  Complexity     4901     4901           
=========================================
  Files           549      549           
  Lines         14497    14497           
  Branches       1390     1390           
=========================================
  Hits          13208    13208           
  Misses          890      890           
  Partials        399      399           

Impacted Files	Coverage Δ
...pentelemetry/extension/kotlin/ContextExtensions.kt	100.00% <ø> (ø)

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