fix(deps): update module go.opentelemetry.io/proto/otlp to v1.8.0 (#56)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -33,7 +33,7 @@ require (
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.38.0
 	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.38.0
 	go.opentelemetry.io/otel/sdk v1.38.0
-	go.opentelemetry.io/proto/otlp v1.7.1
+	go.opentelemetry.io/proto/otlp v1.8.0
 	golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b
 	golang.org/x/oauth2 v0.30.0
 	google.golang.org/grpc v1.75.0

go.sum

@@ -334,8 +334,8 @@ go.opentelemetry.io/otel/sdk/metric v1.38.0 h1:aSH66iL0aZqo//xXzQLYozmWrXxyFkBJ6
 go.opentelemetry.io/otel/sdk/metric v1.38.0/go.mod h1:dg9PBnW9XdQ1Hd6ZnRz689CbtrUp0wMMs9iPcgT9EZA=
 go.opentelemetry.io/otel/trace v1.38.0 h1:Fxk5bKrDZJUH+AMyyIXGcFAPah0oRcT+LuNtJrmcNLE=
 go.opentelemetry.io/otel/trace v1.38.0/go.mod h1:j1P9ivuFsTceSWe1oY+EeW3sc+Pp42sO++GHkg4wwhs=
-go.opentelemetry.io/proto/otlp v1.7.1 h1:gTOMpGDb0WTBOP8JaO72iL3auEZhVmAQg4ipjOVAtj4=
-go.opentelemetry.io/proto/otlp v1.7.1/go.mod h1:b2rVh6rfI/s2pHWNlB7ILJcRALpcNDzKhACevjI+ZnE=
+go.opentelemetry.io/proto/otlp v1.8.0 h1:fRAZQDcAFHySxpJ1TwlA1cJ4tvcrw7nXl9xWWC8N5CE=
+go.opentelemetry.io/proto/otlp v1.8.0/go.mod h1:tIeYOeNBU4cvmPqpaji1P+KbB4Oloai8wN4rWzRrFF0=
 go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/goleak v1.1.10/go.mod h1:8a7PlsEVH3e/a/GLqe5IIrQx6GzcnRmZEufDUTk4A7A=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=