Merge branch '2.20' into 2.21

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -38,6 +38,7 @@ No changes since 2.19.0
 #51: Unify testing structure/tools to JUnit5 [JSTEP-10]
  (contributed by Joo-Hyuk K)
 
+2.18.6 (22-Feb-2026)
 2.18.5 (27-Oct-2025)
 2.18.4 (05-May-2025)
 2.18.3 (28-Feb-2025)