build(deps): bump org.apache.mina:mina-core in /junixsocket-demo

Bumps [org.apache.mina:mina-core](https://github.com/apache/mina) from 2.2.5 to 2.2.7.
- [Commits](apache/mina@2.2.5...2.2.7)

---
updated-dependencies:
- dependency-name: org.apache.mina:mina-core
  dependency-version: 2.2.7
  dependency-type: direct:production
...

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

Author: dependabot[bot]

junixsocket-demo/pom.xml

@@ -80,7 +80,7 @@
         <dependency>
             <groupId>org.apache.mina</groupId>
             <artifactId>mina-core</artifactId>
-            <version>2.2.5</version>
+            <version>2.2.7</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.slf4j</groupId>