build(deps): update dependency com.google.cloud:google-cloud-shared-config to v1.5.5 (#390)

Author: renovate-bot

pom.xml

@@ -13,7 +13,7 @@
  <parent>
  <groupId>com.google.cloud</groupId>
  <artifactId>google-cloud-shared-config</artifactId>
- <version>1.5.4</version>
+ <version>1.5.5</version>
  </parent>
 
  <developers>