Update librsvg to 2.45.5
Summary: Changelog available at this page starting from version 2.41.0.
Test Plan: @JoshStrobl will take care of it.
Reviewers: Triage Team, JoshStrobl
Reviewed By: Triage Team, JoshStrobl
Subscribers: JoshStrobl
Differential Revision: https://dev.getsol.us/D6061