Bump vertx-web from 4.3.2 to 4.3.8 in /examples/vertx-example

Bumps vertx-web from 4.3.2 to 4.3.8.

---
updated-dependencies:
- dependency-name: io.vertx:vertx-web
  dependency-type: direct:production
...

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

examples/vertx-example/pom.xml

@@ -33,7 +33,7 @@
   application show-casing Layrry's dynamic plug-in capabilities</description>
 
   <properties>
-    <vertx.version>4.3.2</vertx.version>
+    <vertx.version>4.3.8</vertx.version>
     <target.assembly.directory>${project.build.directory}/plugins</target.assembly.directory>
   </properties>