PlantUML diagrams always "update" on updating test sites

[yash-chowdhary]

Tell us about your environment

• MarkBind Version: 2.12.0

What did you do? Please include the actual source code causing the issue.

• Branched off of master
• Ran npm run updatetest

What did you expect to happen?
Since it's a newly created branch w/o any changes, nothing should be affected.

What actually happened? Please include the actual, raw output.
All PUML diagrams in test/functional/test_site/expected/diagrams are "updated".
Specifically, the size of the .png files is affected -

• before running updatetest (on master branch) -

  

• after running updatetest (on the newly created branch) -

  

[alyip98]

The reason this happens is because PlantUML includes the language of the OS running it in the metadata of the generated PNG. The difference is due to the files being generated with en-US and en-SG (I forgot which is which).