Merge pull request #3812 from ninjarobot/patch-15

Update swipl to 7.7.5.

library/swipl

@@ -1,9 +1,9 @@
 Maintainers: Dave Curylo <[email protected]> (@ninjarobot)
 GitRepo: https://github.com/SWI-Prolog/docker-swipl.git
 
-Tags: latest, 7.7.4
-GitCommit: 9fc0c0b9d4c0f678238c1eb85780661c16201f90
-Directory: 7.7.4/stretch
+Tags: latest, 7.7.5
+GitCommit: 9ca2f2d53548670fc65f23c31c72516962f9509d
+Directory: 7.7.5/stretch
 
 Tags: stable, 7.6.3
 GitCommit: 9fc0c0b9d4c0f678238c1eb85780661c16201f90