fix(Git): Work around a bug with JGit vs MINA

Also see [1] for some more background information about why SSH
connections can otherwise block "if there is less entropy available than
requested".

As a safety measure, this is only done on Linux to not cause any
unintended slow-down on Windows, also see [2].

[1]: https://stackoverflow.com/a/59097932/1127485
[2]: https://www.baeldung.com/java-security-egd#testing-the-effect-of-javasecurityegd

Signed-off-by: Sebastian Schuberth <sebastian@doubleopen.org>

plugins/version-control-systems/git/src/main/kotlin/Git.kt

@@ -104,6 +104,11 @@ class Git(
 ) : VersionControlSystem() {
     companion object {
         init {
+            if (Os.isLinux) {
+                // Work around a bug in Apache MINA sshd, see https://github.com/eclipse-jgit/jgit/issues/135.
+                System.setProperty("java.security.egd", "file:/dev/./urandom")
+            }
+
             // Make sure that JGit uses the exact same authentication information as ORT itself. This addresses
             // discrepancies in the way .netrc files are interpreted between JGit's and ORT's implementation.
             CredentialsProvider.setDefault(AuthenticatorCredentialsProvider)