build(downloader): Exclude Apache MINA's sshd-sftp dependency

JGit's SSH transport depends on MINA's sshd-sftp although that
dependency is optional [1] and not required for pure SSH connections. So
remove that dependency, which also solves a class initialization issue
when building GraalVM native images.

[1]: https://github.com/apache/mina-sshd/blob/master/docs/sftp.md

Signed-off-by: Sebastian Schuberth <[email protected]>

Author: sschuberth

downloader/build.gradle.kts

@@ -28,7 +28,10 @@ dependencies {
     implementation(project(":utils:ort-utils"))
 
     implementation(libs.jgit)
-    implementation(libs.jgitSshApacheAgent)
+    implementation(libs.jgitSshApacheAgent) {
+        exclude(group = "org.apache.sshd", module = "sshd-sftp")
+            .because("it is not required for cloning via SSH and causes issues with GraalVM native images")
+    }
     implementation(libs.svnkit) {
         exclude(group = "org.apache.sshd", module = "sshd-core")
             .because("it is included in JGit's sshd-osgi dependency")