Bump guava from 27.1-jre to 29.0-jre in /parent

Bumps [guava](https://github.com/google/guava) from 27.1-jre to 29.0-jre.
- [Release notes](https://github.com/google/guava/releases)
- [Commits](https://github.com/google/guava/commits)

Signed-off-by: dependabot[bot] <support@github.com>

parent/pom.xml

@@ -88,7 +88,7 @@ application while protecting against XSS.
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    <guava.version>27.1-jre</guava.version>
+    <guava.version>29.0-jre</guava.version>
   </properties>
 
   <build>