[Backport 2.5] [Backport 2.x] [MD] Update dummy url in tests to follow lychee url allowlist

[opensearch-trigger-bot]

Backport 58a2c11 from #3140.

[codecov-commenter]

Codecov Report

Merging #3217 (fc02e82) into 2.5 (8175ccb) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              2.5    #3217   +/-   ##
=======================================
  Coverage   66.70%   66.70%           
=======================================
  Files        3220     3221    +1     
  Lines       61575    61629   +54     
  Branches     9444     9458   +14     
=======================================
+ Hits        41072    41110   +38     
- Misses      18259    18265    +6     
- Partials     2244     2254   +10     

Flag	Coverage Δ
Linux	66.65% <ø> (+<0.01%)	⬆️
Windows	66.65% <ø> (+0.01%)	⬆️

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Impacted Files	Coverage Δ
...s/osd-optimizer/src/node/node_auto_tranpilation.ts	83.67% <0.00%> (-4.09%)	⬇️
packages/osd-optimizer/src/node/cache.ts	51.31% <0.00%> (-2.64%)	⬇️
...ic/application/models/sense_editor/sense_editor.ts	64.88% <0.00%> (-0.89%)	⬇️
...e/public/application/contexts/services_context.tsx	77.77% <0.00%> (ø)
...equest_to_opensearch/send_request_to_opensearch.ts	70.49% <0.00%> (ø)
src/plugins/console/public/lib/utils/index.ts	58.13% <0.00%> (+2.32%)	⬆️
...lugins/console/public/lib/opensearch/opensearch.ts	75.00% <0.00%> (+35.00%)	⬆️

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