Update dependency com.google.cloud.tools:jib-maven-plugin to v3.4.6

Author: renovate[bot]

pom.xml

@@ -538,7 +538,7 @@
             <plugin>
                 <groupId>com.google.cloud.tools</groupId>
                 <artifactId>jib-maven-plugin</artifactId>
-                <version>3.4.2</version>
+                <version>3.4.6</version>
                 <dependencies>
                     <!-- Include jib-spring-boot-extension-maven to prevent spring-boot-devtools from being packaged.-->
                     <dependency>