Bump go.opentelemetry.io/collector/semconv from 0.60.1-0.20220923151520-96e9af35c002 to 0.108.1 in /exporter/splunkhecexporter

Bump go.opentelemetry.io/collector/semconv from 0.60.1-0.20220923151520-96e9af35c002 to 0.108.1 in /exporter/splunkhecexporter #5459