Latest version of com.google.cloud:google-cloud-spanner-jdbc
https://javadoc.io/doc/com.google.cloud/google-cloud-spanner-jdbc
Current version 2.21.0
https://javadoc.io/doc/com.google.cloud/google-cloud-spanner-jdbc/2.21.0
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.google.cloud/google-cloud-spanner-jdbc/2.21.0/package-list