## Description
The definition of the ddtrace dependency in datadog-lambda-python is
being modified and the build_layers.sh script in that repo is being
refactored to deduplicate the use of the sed command injecting the
ddtrace wheel in different repos
[PR](DataDog/datadog-lambda-python#720). This PR
brings dd-trace-py into compatibility with those changes.
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## Testing

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## Risks

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## Additional Notes

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Co-authored-by: Florentin Labelle <florentin.labelle@datadoghq.com>