Use standard way to convert from time.Time to proto Timestamp

[bogdandrutu]

Signed-off-by: Bogdan Drutu bogdandrutu@gmail.com

[dmitryax]

LGTM

[codecov]

Codecov Report

Merging #2548 (ae60d0b) into main (f36771a) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #2548      +/-   ##
==========================================
- Coverage   91.19%   91.18%   -0.01%     
==========================================
  Files         419      419              
  Lines       20983    20983              
==========================================
- Hits        19135    19133       -2     
- Misses       1381     1382       +1     
- Partials      467      468       +1     

Flag	Coverage Δ
integration	69.22% <ø> (ø)
unit	90.06% <100.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...nermetricsreceiver/awsecscontainermetrics/utils.go	100.00% <100.00%> (ø)
receiver/k8sclusterreceiver/watcher.go	95.29% <0.00%> (-2.36%)	⬇️

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