Bump truth-java8-extension from 1.0.1 to 1.1.4 in /metadata

Bumps truth-java8-extension from 1.0.1 to 1.1.4.

---
updated-dependencies:
- dependency-name: com.google.truth.extensions:truth-java8-extension
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/metadata/pom.xml b/metadata/pom.xml
index c6a43c3..42e575a 100644
--- a/metadata/pom.xml
+++ b/metadata/pom.xml
@@ -152,7 +152,7 @@
     <dependency>
       <groupId>com.google.truth.extensions</groupId>
       <artifactId>truth-java8-extension</artifactId>
-      <version>1.0.1</version>
+      <version>1.1.4</version>
       <scope>test</scope>
     </dependency>
   </dependencies>