fix(deps): update googleapis to 81fb87f (open-telemetry#6430)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[google.golang.org/genproto/googleapis/api](https://redirect.github.com/googleapis/go-genproto)
| indirect | digest | `29e43e6` -> `81fb87f` |
|
[google.golang.org/genproto/googleapis/rpc](https://redirect.github.com/googleapis/go-genproto)
| indirect | digest | `a0af3ef` -> `81fb87f` |
|
[google.golang.org/genproto/googleapis/rpc](https://redirect.github.com/googleapis/go-genproto)
| require | digest | `a0af3ef` -> `81fb87f` |

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Author: ajatprabha

exporters/prometheus/config_test.go

@@ -133,7 +133,7 @@ func TestNewConfig(t *testing.T) {
 			},
 			wantConfig: config{
 				registerer: prometheus.DefaultRegisterer,
-				namespace:  "test/_",
+				namespace:  "test_",
 			},
 		},
 	}

exporters/prometheus/exporter.go

@@ -26,6 +26,10 @@ import (
 	"go.opentelemetry.io/otel/sdk/resource"
 )
 
+func init() {
+	model.NameValidationScheme = model.LegacyValidation
+}
+
 const (
 	targetInfoMetricName  = "target_info"
 	targetInfoDescription = "Target metadata"

exporters/prometheus/exporter_test.go

@@ -35,7 +35,7 @@ func TestPrometheusExporter(t *testing.T) {
 		recordMetrics       func(ctx context.Context, meter otelmetric.Meter)
 		options             []Option
 		expectedFile        string
-		disableUTF8         bool
+		enableUTF8          bool
 	}{
 		{
 			name:         "counter",
@@ -195,7 +195,6 @@ func TestPrometheusExporter(t *testing.T) {
 		{
 			name:         "sanitized attributes to labels",
 			expectedFile: "testdata/sanitized_labels.txt",
-			disableUTF8:  true,
 			options:      []Option{WithoutUnits()},
 			recordMetrics: func(ctx context.Context, meter otelmetric.Meter) {
 				opt := otelmetric.WithAttributes(
@@ -405,6 +404,7 @@ func TestPrometheusExporter(t *testing.T) {
 		{
 			name:         "counter utf-8",
 			expectedFile: "testdata/counter_utf8.txt",
+			enableUTF8:   true,
 			recordMetrics: func(ctx context.Context, meter otelmetric.Meter) {
 				opt := otelmetric.WithAttributes(
 					attribute.Key("A.G").String("B"),
@@ -471,11 +471,11 @@ func TestPrometheusExporter(t *testing.T) {
 
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
-			if tc.disableUTF8 {
-				model.NameValidationScheme = model.LegacyValidation
+			if tc.enableUTF8 {
+				model.NameValidationScheme = model.UTF8Validation
 				defer func() {
 					// Reset to defaults
-					model.NameValidationScheme = model.UTF8Validation
+					model.NameValidationScheme = model.LegacyValidation
 				}()
 			}
 			ctx := context.Background()