deps: update dependency com.google.cloud:google-cloud-shared-dependencies to v2.8.0 (#170)

* deps: update dependency com.google.cloud:google-cloud-shared-dependencies to v2.8.0 * 🦉 Updates from OwlBot post-processor See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: renovate-bot

README.md

@@ -27,13 +27,13 @@ If you are using Maven, add this to your pom.xml file:
 If you are using Gradle without BOM, add this to your dependencies
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-tpu:2.2.3'
+implementation 'com.google.cloud:google-cloud-tpu:2.2.4'
 ```
 
 If you are using SBT, add this to your dependencies
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-tpu" % "2.2.3"
+libraryDependencies += "com.google.cloud" % "google-cloud-tpu" % "2.2.4"
 ```
 
 ## Authentication

pom.xml

@@ -86,7 +86,7 @@
  <dependency>
  <groupId>com.google.cloud</groupId>
  <artifactId>google-cloud-shared-dependencies</artifactId>
- <version>2.7.0</version>
+ <version>2.8.0</version>
  <type>pom</type>
  <scope>import</scope>
  </dependency>