Bump com.google.cloud.tools:jib-maven-plugin in /tests/java

Bumps [com.google.cloud.tools:jib-maven-plugin](https://github.com/GoogleContainerTools/jib) from 3.4.3 to 3.4.4.
- [Release notes](https://github.com/GoogleContainerTools/jib/releases)
- [Commits](https://github.com/GoogleContainerTools/jib/commits)

---
updated-dependencies:
- dependency-name: com.google.cloud.tools:jib-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

tests/java/pom.xml

@@ -46,7 +46,7 @@
     <version.lib.asciidoctor.diagram>2.2.1</version.lib.asciidoctor.diagram>
     <version.lib.commonjava.directory>1.0</version.lib.commonjava.directory>
     <version.plugin.helidon-build-tools>2.0.0-M3</version.plugin.helidon-build-tools>
-    <version.plugin.jib>3.4.3</version.plugin.jib>
+    <version.plugin.jib>3.4.4</version.plugin.jib>
     <version.plugin.maven.assembly>3.7.1</version.plugin.maven.assembly>
     <version.plugin.maven.compiler>3.13.0</version.plugin.maven.compiler>
     <version.plugin.maven.dependency>3.8.0</version.plugin.maven.dependency>