ci(spanner): disable reuse fork

Author: sakthivelmanii

google-cloud-spanner/pom.xml

@@ -108,7 +108,7 @@
             <configuration>
               <groups>com.google.cloud.spanner.ParallelIntegrationTest</groups>
               <forkCount>12</forkCount>
-              <reuseForks>true</reuseForks>
+              <reuseForks>false</reuseForks>
               <groups>com.google.cloud.spanner.ParallelIntegrationTest</groups>
             </configuration>
           </execution>