deps: update dependency org.graalvm.buildtools:native-maven-plugin to v0.9.15 (googleapis#1463)

Author: renovate-bot

java-bigtable/samples/native-image-sample/pom.xml

@@ -99,7 +99,7 @@
           <plugin>
             <groupId>org.graalvm.buildtools</groupId>
             <artifactId>native-maven-plugin</artifactId>
-            <version>0.9.14</version>
+            <version>0.9.15</version>
             <extensions>true</extensions>
             <configuration>
               <mainClass>com.example.bigtable.NativeImageBigtableSample