datadog CI failed to create a report when test results contain non-utf8 characters

[gfuller1]

Bug description

When running synthetics from the datadog ci, if the test results contain a special character (such as an error returned during a browser test step) the ci is unable to create the report.

Describe what you expected

the datadog ci to gracefully handle special characters and generate the report

Steps to reproduce the issue

run the following with a test that contains an error in a browser response with a special character not found in utf8.

datadog-ci synthetics run-tests --files synthetics.json --config config.json --jUnitReport test_results.xml

Additional context

The issue is y'all need to clean the results here before trying to convert it to utf8 xml.

Command

synthetics