deps(deps): bump org.codehaus.mojo:exec-maven-plugin

Bumps the maven-minor-patch group with 1 update: [org.codehaus.mojo:exec-maven-plugin](https://github.com/mojohaus/exec-maven-plugin).


Updates `org.codehaus.mojo:exec-maven-plugin` from 3.6.2 to 3.6.3
- [Release notes](https://github.com/mojohaus/exec-maven-plugin/releases)
- [Commits](mojohaus/exec-maven-plugin@3.6.2...3.6.3)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:exec-maven-plugin
  dependency-version: 3.6.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-minor-patch
...

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

Author: dependabot[bot]

example-echo/pom.xml

@@ -33,7 +33,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>exec-maven-plugin</artifactId>
-                <version>3.6.2</version>
+                <version>3.6.3</version>
                 <configuration>
                     <mainClass>io.netty.loom.example.EchoServer</mainClass>
                     <arguments/>