deps: add api-incubator to test deps

Author: olavloite

pom.xml

@@ -207,6 +207,12 @@
       <version>0.33.0</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>io.opentelemetry</groupId>
+      <artifactId>opentelemetry-api-incubator</artifactId>
+      <version>1.45.0-alpha</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-trace</artifactId>