chore: Upgrade Golang to 1.19 (#10176)

[omarkalloush]

Signed-off-by: OmarKalloush omar.kalloush@optimumpartners.co

Closes #10176

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Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
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[codecov]

Codecov Report

Merging #10186 (c2e1629) into master (15ac1a6) will increase coverage by 0.00%.
The diff coverage is 75.00%.

@@           Coverage Diff           @@
##           master   #10186   +/-   ##
=======================================
  Coverage   45.92%   45.93%           
=======================================
  Files         227      227           
  Lines       27403    27419   +16     
=======================================
+ Hits        12584    12594   +10     
- Misses      13110    13114    +4     
- Partials     1709     1711    +2     

Impacted Files	Coverage Δ
pkg/apiclient/apiclient.go	0.96% <0.00%> (ø)
cmd/util/app.go	52.38% <66.66%> (ø)
cmd/util/cluster.go	41.17% <66.66%> (ø)
reposerver/repository/repository.go	64.30% <87.50%> (ø)
cmd/argocd/commands/admin/settings_rbac.go	23.80% <100.00%> (ø)
util/git/creds.go	40.64% <0.00%> (-0.54%)	⬇️
util/helm/cmd.go	25.00% <0.00%> (-0.30%)	⬇️
util/settings/settings.go	50.90% <0.00%> (ø)
...is/applicationset/v1alpha1/applicationset_types.go	34.69% <0.00%> (ø)
applicationset/generators/matrix.go	72.97% <0.00%> (+0.37%)	⬆️
... and 2 more

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[crenshaw-dev]

Failures look like:

1. ioutil stuff has to be upgraded and
2. make codegen

You up for that @omarkalloush? Let me know if you need any guidance!

[omarkalloush]

@crenshaw-dev I'll give it a go 👍🏻