Update sassc plugin to latest version

mgreter · mgreter · commit 840358484528 · 2019-04-11T00:53:03.000+02:00
diff --git a/plugins/sassc b/plugins/sassc
@@ -1 +1 @@
-Subproject commit 36eb82eedb47cbeeb0333e4fb88a1e6543e0b662
+Subproject commit aa6d5c635ea8faf44d542a23aaf85d27e5777d48
