Add Go 1.19 to CI test matrix

[fxamacker]

Description

Test with latest 3 Go versions: Go 1.17, 1.18, and 1.19.

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• [x] Targeted PR against main branch
• [ ] Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• [ ] Code follows the standards mentioned here
• [ ] Updated relevant documentation
• [x] Re-reviewed Files changed in the Github PR explorer
• [x] Added appropriate labels

[codecov-commenter]

Codecov Report

Merging #274 (47d68d8) into main (8377b6e) will increase coverage by 0.02%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #274      +/-   ##
==========================================
+ Coverage   69.03%   69.06%   +0.02%     
==========================================
  Files          14       14              
  Lines        7306     7306              
==========================================
+ Hits         5044     5046       +2     
+ Misses       1629     1627       -2     
  Partials      633      633              

Impacted Files	Coverage Δ
storage.go	79.13% <0.00%> (+0.34%)	:arrow_up:

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