update CPP_PTB to latest release

marcobarilari · marcobarilari · commit 33f40656f66e · 2021-06-29T11:32:30.000+02:00
diff --git a/lib/CPP_PTB b/lib/CPP_PTB
@@ -1 +1 @@
-Subproject commit 2bba279df5639086e8e71dd3f6e09b764d629395
+Subproject commit abb172e99fc1ee871cf8eb1fb00daac31748d7c1
