Bump sshd-core from 0.8.0 to 2.6.0

Bumps [sshd-core](https://github.com/apache/mina-sshd) from 0.8.0 to 2.6.0.
- [Release notes](https://github.com/apache/mina-sshd/releases)
- [Changelog](https://github.com/apache/mina-sshd/blob/master/CHANGES.md)
- [Commits](https://github.com/apache/mina-sshd/compare/sshd-0.8.0...sshd-2.6.0)

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index 8608ada..ff726d4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -606,7 +606,7 @@
       <dependency>
         <groupId>org.apache.sshd</groupId>
         <artifactId>sshd-core</artifactId>
-        <version>0.8.0</version>
+        <version>2.6.0</version>
       </dependency>
       <dependency>
         <groupId>org.apache.mina</groupId>