Update vdiffr version

Thomas Knecht · ThomasKnecht · commit 59d2b6ecfba1 · 2019-10-01T08:45:43.000+02:00
diff --git a/tests/figs/deps.txt b/tests/figs/deps.txt
@@ -1,3 +1,3 @@
 - vdiffr-svg-engine: 1.0
-- vdiffr: 0.3.0
+- vdiffr: 0.3.1
 - freetypeharfbuzz: 0.2.5
