Bump github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest from 0.106.2-0.20240808194002-5374bbac3595 to 0.111.0 in /functional_tests

Bump github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest from 0.106.2-0.20240808194002-5374bbac3595 to 0.111.0 in /functional_tests #1629