deps: update dependency com.google.cloud.samples:shared-configuration to v1.0.12 (#210)

Author: stephaniewang526

samples/pom.xml

@@ -26,7 +26,7 @@
  <parent>
  <groupId>com.google.cloud.samples</groupId>
  <artifactId>shared-configuration</artifactId>
- <version>1.0.11</version>
+ <version>1.0.12</version>
  </parent>
 
  <properties>