fix(proto): handle zero time

[ernado]

No description provided.

[codecov-commenter]

Codecov Report

Merging #134 (5ae805b) into main (29506bc) will decrease coverage by 0.11%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##             main     #134      +/-   ##
==========================================
- Coverage   76.00%   75.89%   -0.12%     
==========================================
  Files         120      120              
  Lines        5702     5712      +10     
==========================================
+ Hits         4334     4335       +1     
- Misses       1164     1170       +6     
- Partials      204      207       +3     

Impacted Files	Coverage Δ
proto/datetime.go	70.00% <50.00%> (-30.00%)	⬇️
proto/datetime64.go	91.30% <100.00%> (+3.06%)	⬆️
client.go	72.82% <0.00%> (-1.05%)	⬇️
query.go	66.10% <0.00%> (-0.64%)	⬇️

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