docs: add limitation about windows versions

[mweibel]

fixes #5376

Review please @lippertmarkus :)

Checklist:

• My organization is added to USERS.md.

[codecov]

Codecov Report

Merging #5462 (d37e72c) into master (d9f2010) will increase coverage by 0.00%.
The diff coverage is 73.68%.

❗ Current head d37e72c differs from pull request most recent head 56e28e8. Consider uploading reports for the commit 56e28e8 to get more accurate results

@@           Coverage Diff           @@
##           master    #5462   +/-   ##
=======================================
  Coverage   16.47%   16.48%           
=======================================
  Files         243      243           
  Lines       43769    43774    +5     
=======================================
+ Hits         7211     7214    +3     
- Misses      35575    35576    +1     
- Partials      983      984    +1     

Impacted Files	Coverage Δ
workflow/cron/controller.go	0.00% <ø> (ø)
workflow/controller/operator.go	70.24% <66.66%> (-0.04%)	⬇️
util/template/expression_template.go	90.47% <75.00%> (-9.53%)	⬇️
server/auth/mode.go	100.00% <100.00%> (ø)
workflow/controller/exec_control.go	51.08% <100.00%> (+0.53%)	⬆️
cmd/argoexec/commands/emissary.go	48.43% <0.00%> (-1.57%)	⬇️
cmd/argo/commands/get.go	56.66% <0.00%> (-0.67%)	⬇️
workflow/metrics/server.go	17.02% <0.00%> (+4.25%)	⬆️

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[simster7]

You say

If this is required, you need to build the argoexec container yourself by first adjusting the base image.

Correct me if I'm wrong please, but is the reason we can't do this ourselves is because GitHub doesn't provide the 1909 runner?

[mweibel]

Correct me if I'm wrong please, but is the reason we can't do this ourselves is because GitHub doesn't provide the 1909 runner?

exactly. We might try to build one regardless, but it's not guaranteed to work (which is the entire root of this issue 😄 )