Disable ssh-rsa test on el9

Signed-off-by: Michel Alexandre Salim <salimma@fedoraproject.org>

rust-git2_0.13.spec

@@ -142,8 +142,13 @@ echo '/usr/bin/git'
 
 %if %{with check}
 %check
+%if 0%{?el9}
+# ssh-rsa keys are unsupported
+%cargo_test -- -- --skip 'cred::test::ssh_key_from_memory'
+%else
 %cargo_test
 %endif
+%endif
 
 %changelog
 %autochangelog