Roll third_party/wuffs to version 0.3.0-beta.8

Update Wuffs to match the version currently used by Chromium
(updated in http://crrev.com/c/3041153)

Change-Id: Id8d74dacef69d27bce48e470b5de42ea277b61d1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/436717
Auto-Submit: Nigel Tao <nigeltao@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
diff --git a/DEPS b/DEPS
index 5208d28..791541a 100644
--- a/DEPS
+++ b/DEPS
@@ -41,7 +41,7 @@
   "third_party/externals/spirv-tools"     : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git@11cd875ed88484f93943071083b4821b4c3d2193",
   "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@e4b7794ddbee1c3fa9a8199779ab6e605faa48c3",
   #"third_party/externals/v8"              : "https://chromium.googlesource.com/v8/v8.git@5f1ae66d5634e43563b2d25ea652dfb94c31a3b4",
-  "third_party/externals/wuffs"           : "https://skia.googlesource.com/external/github.com/google/wuffs.git@f49c38202914c289621f547ff016e5f02c994dda",
+  "third_party/externals/wuffs"           : "https://skia.googlesource.com/external/github.com/google/wuffs.git@1b9a6cb85b9f359595bd264d4c95da5d1291adc5",
   "third_party/externals/zlib"            : "https://chromium.googlesource.com/chromium/src/third_party/zlib@c876c8f87101c5a75f6014b0f832499afeb65b73",
 
   "../src": {