vndk-def: Add VNDK_VER suffix

After this commit, vndk_definition_tool.py will tag the shared libraries
under /system/lib/vndk${VNDK_VER} and /system/lib/vndk-sp${VNDK_VER}
correctly.

Bug: 71368232
Test: ./tests/run.py
Test: Run vndk_definition_tool.py on latest product and the
dependencies from /vendor/lib to /system/lib/vndk-X are not treated as
violations.

Change-Id: Icc0478ccb1f2fa89e152212652eb676509fa3ae0