Updated swipl devel to 9.3.21

Author: JanWielemaker

library/swipl

@@ -1,11 +1,11 @@
 Maintainers: Jan Wielemaker <jan@swi-prolog.org> (@JanWielemaker),
              Dave Curylo <dave@curylo.org> (@ninjarobot)
 GitRepo: https://github.com/SWI-Prolog/docker-swipl.git
-GitCommit: 48963cac95fb1e03fa6280d30da302b887d42280
+GitCommit: dbf90dada050f242dbdde22bb5f82ffb79dda87e
 Architectures: amd64, arm32v7, arm64v8
 
-Tags: latest, 9.3.20
-Directory: 9.3.20/bookworm
+Tags: latest, 9.3.21
+Directory: 9.3.21/bookworm
 
 Tags: stable, 9.2.9
 Directory: 9.2.9/bookworm