upgrade dockerfile go to 1.19

[hamersaw]

TL;DR

Upgrading dockerfile to use go 1.19 for uniformity in local builds.

Type

• Bug Fix
• Feature
• Plugin

Are all requirements met?

• Code completed
• Smoke tested
• Unit tests added
• Code documentation added
• Any pending items have an associated Issue

Complete description

^^^

Tracking Issue

NA

Follow-up issue

NA

[codecov]

Codecov Report

Merging #108 (7d335e7) into master (0638a9e) will increase coverage by 1.16%.
The diff coverage is n/a.

❗ Current head 7d335e7 differs from pull request most recent head 6e42616. Consider uploading reports for the commit 6e42616 to get more accurate results

@@            Coverage Diff             @@
##           master     #108      +/-   ##
==========================================
+ Coverage   68.50%   69.67%   +1.16%     
==========================================
  Files          31       31              
  Lines        1667     1385     -282     
==========================================
- Hits         1142      965     -177     
+ Misses        447      342     -105     
  Partials       78       78              

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see 28 files with indirect coverage changes