Revert "Bump structurizr.version from 1.6.2 to 1.6.3"
Revert "Bump structurizr.version from 1.6.2 to 1.6.3"

This reverts commit 093dd650a0674e08e49452349b1a09780b011d2d.

apache/isis,apache/isis,apache/isis,apache/isis,apache/isis,apache/isis