build: bump io.vertx:vertx-junit5 from 4.3.2 to 4.5.20

Bumps [io.vertx:vertx-junit5](https://github.com/eclipse-vertx/vertx-junit5) from 4.3.2 to 4.5.20.
- [Commits](eclipse-vertx/vertx-junit5@4.3.2...4.5.20)

---
updated-dependencies:
- dependency-name: io.vertx:vertx-junit5
  dependency-version: 4.5.20
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

apm-agent-plugins/apm-vertx/pom.xml

@@ -16,7 +16,7 @@
     <properties>
         <apm-agent-parent.base.dir>${project.basedir}/../..</apm-agent-parent.base.dir>
         <!-- stick to a known older version that works with vertx3 -->
-        <version.vertx.test>4.3.2</version.vertx.test>
+        <version.vertx.test>4.5.20</version.vertx.test>
     </properties>
 
     <modules>