Handle SSH keys better

OpenSSH will iterate through a series of keys.  Additionally, there may
be a key specified in the ssh/config file that we need to account for.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/18864

common/git/git_clone_handler.cpp

@@ -63,6 +63,7 @@ bool GIT_CLONE_HANDLER::PerformClone()
     cloneOptions.fetch_opts.callbacks.payload = this;
 
     m_testedTypes = 0;
+    ResetNextKey();
 
     if( git_clone( &m_repo, m_URL.ToStdString().c_str(), m_clonePath.ToStdString().c_str(),
                    &cloneOptions ) != 0 )