⚙️ [parallelisation] Report the context cancellation cause in the related error to provide more context

[acabarbaye]

Description

• this is to make use of the feature introduced in go 1.20 https://pkg.go.dev/context#Cause which should help determining what created the cancellation of a context.

Test Coverage

• This change is covered by existing or additional automated tests.
• Manual testing has been performed (and evidence provided) as automated testing was not feasible.
• Additional tests are not required for this change (e.g. documentation update).