/usr/lib/libStepTalk.so.0.10.0 is in libsteptalk0 0.10.0-6+b3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/GNUstep/Frameworks/StepTalk.framework/Versions/0/libStepTalk.so.0.10.0
/usr/lib/GNUstep/Frameworks/StepTalk.framework/Versions/0/libStepTalk.so.0.10.0