Bump guava from 28.2-android to 29.0-android in /examples (#176)

Bumps [guava](https://github.com/google/guava) from 28.2-android to 29.0-android.
- [Release notes](https://github.com/google/guava/releases)
- [Commits](https://github.com/google/guava/commits)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

examples/pom.xml

@@ -78,7 +78,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>28.2-android</version>
+            <version>29.0-android</version>
         </dependency>
     </dependencies>