VISS/VISSR: update VISSR git submodule to commit fbb02dec (VISS v3 WIP)

Currently CDSP points at a VISSR commit that implements VISS v2. Since
then the upstream VISS community has been working towards VISS v3 and
updated the VISSR implementation of it accordingly.

Allow CDSP users to experiment with this new work by updating the CDSP
git submodule to point at the latest upstream VISSR commit fbb02dec on
the master branch.

Integration was sanity tested using the VISSR HTML client to get/set
VSS data into the Apache IoTDB DB.

Signed-off-by: Stephen Lawrence <[email protected]>