add 4.20 to upstream mapping

ksimon1 · ksimon1 · commit 8b7ae5a9e006 · 2025-10-29T13:34:03.000+01:00
Signed-off-by: Karel Simon &lt;ksimon@redhat.com&gt;
diff --git a/upstream_sources.yaml b/upstream_sources.yaml
@@ -2,4 +2,5 @@
 4.16:main
 4.17:main
 4.18:main
-4.19:main
+4.19:main
+4.20:main
