Update dependency com.google.cloud.tools:jib-maven-plugin to v3.4.4

Author: renovate[bot]

pom.xml

@@ -42,7 +42,7 @@
             <plugin>
                 <groupId>com.google.cloud.tools</groupId>
                 <artifactId>jib-maven-plugin</artifactId>
-                <version>3.4.3</version>
+                <version>3.4.4</version>
             </plugin>
             <plugin>
                 <groupId>org.jacoco</groupId>