Add build constraints to not build on windows

Author: MrAlias

instrumentation/github.com/confluentinc/confluent-kafka-go/kafka/splunkkafka/carrier.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !windows
+
 package splunkkafka
 
 import (

instrumentation/github.com/confluentinc/confluent-kafka-go/kafka/splunkkafka/carrier_test.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !windows
+
 package splunkkafka_test
 
 import (

instrumentation/github.com/confluentinc/confluent-kafka-go/kafka/splunkkafka/config.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !windows
+
 package splunkkafka
 
 import (

instrumentation/github.com/confluentinc/confluent-kafka-go/kafka/splunkkafka/config_test.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !windows
+
 package splunkkafka
 
 import (

instrumentation/github.com/confluentinc/confluent-kafka-go/kafka/splunkkafka/kafka.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !windows
+
 // Package splunkkafka provides functions to trace the
 // github.com/confluentinc/confluent-kafka-go/kafka package.
 package splunkkafka // import "github.com/signalfx/splunk-otel-go/instrumentation/github.com/confluentinc/confluent-kafka-go/kafka/splunkkafka"

instrumentation/github.com/confluentinc/confluent-kafka-go/kafka/splunkkafka/kafka_test.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !windows
+
 package splunkkafka
 
 import (

instrumentation/github.com/confluentinc/confluent-kafka-go/kafka/splunkkafka/test/kafka_test.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !windows
+
 package test
 
 import (