chore(java-spanner): add to exclusions in generation/check_non_release_please_versions.sh

Author: chingor13

generation/check_non_release_please_versions.sh

@@ -13,6 +13,7 @@ for pomFile in $(find . -mindepth 2 -name pom.xml | sort ); do
       [[ "${pomFile}" =~ .*java-logging-logback.* ]] || \
       [[ "${pomFile}" =~ .*java-bigquery.* ]] || \
       [[ "${pomFile}" =~ .*sdk-platform-java.* ]] || \
+      [[ "${pomFile}" =~ .*java-spanner.* ]] || \
       [[ "${pomFile}" =~ .*.github*. ]]; then
     continue
   fi