Update rls submodule

dtolnay · dtolnay · commit 5dfc264055d2 · 2019-12-14T14:31:33.000-08:00
diff --git a/src/tools/rls b/src/tools/rls
@@ -1 +1 @@
-Subproject commit 8f1c2756d76c3dd728b925b65eec0106eb3102ea
+Subproject commit fed7a31cd93bbd3c8a9f38871838b59b5dce2a35
