Bump mailVersion from 2.0.2 to 2.0.3 (#8994)

Bumps `mailVersion` from 2.0.2 to 2.0.3.

Updates `org.eclipse.angus:jakarta.mail` from 2.0.2 to 2.0.3

Updates `org.eclipse.angus:angus-mail` from 2.0.2 to 2.0.3
- [Release notes](https://github.com/eclipse-ee4j/angus-mail/releases)
- [Commits](https://github.com/eclipse-ee4j/angus-mail/compare/2.0.2...2.0.3)

---
updated-dependencies:
- dependency-name: org.eclipse.angus:jakarta.mail
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.angus:angus-mail
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build.gradle

@@ -90,7 +90,7 @@ ext {
     kryoVersion = '5.5.0'
     lettuceVersion = '6.3.1.RELEASE'
     log4jVersion = '2.21.1'
-    mailVersion = '2.0.2'
+    mailVersion = '2.0.3'
     micrometerTracingVersion = '1.2.3'
     micrometerVersion = '1.12.3'
     mockitoVersion = '5.7.0'