awsemfexporter: migrate to latest semconv version (open-telemetry#35343)

Description: The version of semconv is upgraded from v1.6.1 to v1.27.0

This is a trivial migration. semconv usage inside component:

- conventions.AttributeServiceName="service.name" on both versions
- conventions.AttributeServiceNamespace="service.namespace" on both
versions

Link to tracking Issue:
open-telemetry#22095

Testing: Tests passed

Author: narcis96

exporter/awsemfexporter/metric_translator_test.go

@@ -14,7 +14,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"go.opentelemetry.io/collector/pdata/pcommon"
 	"go.opentelemetry.io/collector/pdata/pmetric"
-	conventions "go.opentelemetry.io/collector/semconv/v1.6.1"
+	conventions "go.opentelemetry.io/collector/semconv/v1.27.0"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 	"go.uber.org/zap/zaptest/observer"

exporter/awsemfexporter/util.go

@@ -11,7 +11,7 @@ import (
 
 	"go.opentelemetry.io/collector/pdata/pcommon"
 	"go.opentelemetry.io/collector/pdata/pmetric"
-	conventions "go.opentelemetry.io/collector/semconv/v1.6.1"
+	conventions "go.opentelemetry.io/collector/semconv/v1.27.0"
 	"go.uber.org/zap"
 )
 

exporter/awsemfexporter/util_test.go

@@ -9,7 +9,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"go.opentelemetry.io/collector/pdata/pcommon"
 	"go.opentelemetry.io/collector/pdata/pmetric"
-	conventions "go.opentelemetry.io/collector/semconv/v1.6.1"
+	conventions "go.opentelemetry.io/collector/semconv/v1.27.0"
 	"go.uber.org/zap"
 
 	"github.com/open-telemetry/opentelemetry-collector-contrib/internal/coreinternal/occonventions"