ci: use Go-1.19 in codecov

[sbinet]

Signed-off-by: Sebastien Binet binet@cern.ch

Please take a look.

[codecov-commenter]

Codecov Report

Merging #755 (44995db) into master (c76e891) will increase coverage by 1.46%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #755      +/-   ##
==========================================
+ Coverage   73.34%   74.81%   +1.46%     
==========================================
  Files          56       58       +2     
  Lines        5159     7345    +2186     
==========================================
+ Hits         3784     5495    +1711     
- Misses       1191     1655     +464     
- Partials      184      195      +11     

Impacted Files	Coverage Δ
vg/geom.go	76.00% <0.00%> (-5.25%)	:arrow_down:
plotter/quartile.go	67.97% <0.00%> (-2.12%)	:arrow_down:
palette/hsva.go	89.74% <0.00%> (-1.79%)	:arrow_down:
text/plain.go	88.63% <0.00%> (-1.69%)	:arrow_down:
plotter/errbars.go	86.56% <0.00%> (-1.44%)	:arrow_down:
vg/vgpdf/vgpdf.go	68.58% <0.00%> (-1.29%)	:arrow_down:
axis.go	85.96% <0.00%> (-0.99%)	:arrow_down:
vg/tee.go	76.00% <0.00%> (-0.93%)	:arrow_down:
palette/moreland/smooth.go	85.91% <0.00%> (-0.63%)	:arrow_down:
plotter/line.go	90.38% <0.00%> (-0.42%)	:arrow_down:
... and 45 more

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