Update path to libsofthsm.so
Update path to libsofthsm.so

The path was changed in version 1.3.5-1ubuntu3 of libsofthsm.

codingllama/trillian,google/trillian,gdbelvin/trillian,Martin2112/trillian,RJPercival/trillian,daviddrysdale/trillian,daviddrysdale/trillian,RJPercival/trillian,google/trillian,Martin2112/trillian,codingllama/trillian,Martin2112/trillian,gdbelvin/trillian,AlCutter/trillian,gdbelvin/trillian,daviddrysdale/trillian,AlCutter/trillian