Bump com.icegreen:greenmail from 2.1.0-rc-1 to 2.1.1

Bumps [com.icegreen:greenmail](https://github.com/greenmail-mail-test/greenmail) from 2.1.0-rc-1 to 2.1.1.
- [Release notes](https://github.com/greenmail-mail-test/greenmail/releases)
- [Commits](greenmail-mail-test/greenmail@release-2.1.0-rc-1...release-2.1.1)

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

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

examples/javamail-velocity/pom.xml

@@ -112,7 +112,7 @@
     <dependency>
       <groupId>com.icegreen</groupId>
       <artifactId>greenmail</artifactId>
-      <version>2.1.0-rc-1</version>
+      <version>2.1.1</version>
       <exclusions>
         <exclusion>
           <groupId>junit</groupId>

examples/javamail/pom.xml

@@ -76,7 +76,7 @@
     <dependency>
       <groupId>com.icegreen</groupId>
       <artifactId>greenmail</artifactId>
-      <version>2.1.0-rc-1</version>
+      <version>2.1.1</version>
       <exclusions>
         <exclusion>
           <groupId>junit</groupId>