Deprecate otel_to_hec_fields.name setting from splunkhec exporter

The LogRecord Name field [is removed](open-telemetry/opentelemetry-specification#2271) from the specification and is [going to be removed](open-telemetry/opentelemetry-proto#357) from the OTLP.

CHANGELOG.md

@@ -35,6 +35,10 @@
 - `resourcetotelemetry`: Ensure resource attributes are added to summary
   and exponential histogram data points. (#7523)
 
+## Deprecations
+
+- Deprecated otel_to_hec_fields.name setting from splunkhec exporter. (#7560)
+
 ## v0.43.0
 
 ## 💡 Enhancements 💡

exporter/splunkhecexporter/exporter.go

@@ -71,6 +71,10 @@ func createExporter(
 		config.SplunkAppVersion = buildinfo.Version
 	}
 
+	if config.HecFields.Name != "" {
+		logger.Warn("otel_to_hec_fields.name setting is deprecated and will be removed soon.")
+	}
+
 	options, err := config.getOptionsFromConfig()
 	if err != nil {
 		return nil,