Update VE core submodule to master (0677c3b)

New changes:
28ebb29 ve.ui.CommentInspector.css: Fix documentation
b3b3b11 Followup a618491: fix JS errors when slugging near annotated inline nodes
b987d63 Record and show observation times in ve.Filibuster
60ac437 ve.ui.FragmentInspector: Remove #setDimensions
9f4a067 ve.ui.CommentInspector.js: Fix documentation
0677c3b Followup b149390: fix dm.Surface's concept of "selectedNode" to match SurfaceFragment's

Change-Id: I1f3c9d3e81eea9d380b2e2aa5deb9fdbf0ca9c93