build(deps): bump software.amazon.msk:aws-msk-iam-auth

Bumps [software.amazon.msk:aws-msk-iam-auth](https://github.com/aws/aws-msk-iam-auth) from 1.1.9 to 2.0.3.
- [Release notes](https://github.com/aws/aws-msk-iam-auth/releases)
- [Commits](aws/aws-msk-iam-auth@v1.1.9...v2.0.3)

---
updated-dependencies:
- dependency-name: software.amazon.msk:aws-msk-iam-auth
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

pom.xml

@@ -233,7 +233,7 @@
             <dependency>
                 <groupId>software.amazon.msk</groupId>
                 <artifactId>aws-msk-iam-auth</artifactId>
-                <version>1.1.9</version>
+                <version>2.0.3</version>
             </dependency>
             <!-- START dependencies for Tests -->
             <dependency>