libs: update sshd-core to version 2.15.0

up-to-date dependency, fixes, no need for extra dependency for ed25519
support.

See: https://github.com/apache/mina-sshd/releases

Acked-by: Lea Morschel
Target: master
Require-book: no
Require-notes: no

Author: kofemann

modules/dcache/pom.xml

@@ -205,11 +205,6 @@
         <groupId>org.apache.sshd</groupId>
         <artifactId>sshd-core</artifactId>
     </dependency>
-    <!-- For ed25519 support -->
-    <dependency>
-        <groupId>net.i2p.crypto</groupId>
-        <artifactId>eddsa</artifactId>
-    </dependency>
     <dependency>
         <groupId>commons-codec</groupId>
         <artifactId>commons-codec</artifactId>

pom.xml

@@ -532,14 +532,8 @@
 	    <dependency>
 	      <groupId>org.apache.sshd</groupId>
 	      <artifactId>sshd-core</artifactId>
-	      <version>2.13.1</version>
+	      <version>2.15.0</version>
 	    </dependency>
-        <!-- For ed25519 support -->
-        <dependency>
-            <groupId>net.i2p.crypto</groupId>
-            <artifactId>eddsa</artifactId>
-            <version>0.3.0</version>
-        </dependency>
             <dependency>
                 <groupId>org.liquibase</groupId>
                 <artifactId>liquibase-core</artifactId>