Bump greenmail.version from 2.1.0 to 2.1.1

Bumps `greenmail.version` from 2.1.0 to 2.1.1.

Updates `com.icegreen:greenmail-junit4` from 2.1.0 to 2.1.1
- [Release notes](https://github.com/greenmail-mail-test/greenmail/releases)
- [Commits](greenmail-mail-test/greenmail@release-2.1.0...release-2.1.1)

Updates `com.icegreen:greenmail` from 2.1.0 to 2.1.1
- [Release notes](https://github.com/greenmail-mail-test/greenmail/releases)
- [Commits](greenmail-mail-test/greenmail@release-2.1.0...release-2.1.1)

---
updated-dependencies:
- dependency-name: com.icegreen:greenmail-junit4
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: com.icegreen:greenmail
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

extensions/modules/mail/pom.xml

@@ -49,7 +49,7 @@
         <jakarta.mail-api.version>2.1.3</jakarta.mail-api.version>
         <eclipse.angus-mail.version>2.0.3</eclipse.angus-mail.version>
         <jakarta.activation-api.version>2.1.3</jakarta.activation-api.version>
-        <greenmail.version>2.1.0</greenmail.version>
+        <greenmail.version>2.1.1</greenmail.version>
     </properties>
 
     <dependencies>