roll libjpeg-turbo to 1.5.3 release

This is basically a no-op roll... the one CL difference between
where we're at now and the 1.5.3 release was a whitespace change.

It's just nice to read @1.5.3.

Change-Id: I3145acabac244006bc5beeca20db390bc79cff4d
Reviewed-on: https://skia-review.googlesource.com/91406
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
diff --git a/DEPS b/DEPS
index ed26e04..837cdc5 100644
--- a/DEPS
+++ b/DEPS
@@ -12,7 +12,7 @@
   "third_party/externals/icu"           : "https://chromium.googlesource.com/chromium/deps/icu.git@ec9c1133693148470ffe2e5e53576998e3650c1d",
   "third_party/externals/imgui"         : "https://github.com/ocornut/imgui.git@6384eee34f08cb7eab8d835043e1738e4adcdf75",
   "third_party/externals/jsoncpp"       : "https://chromium.googlesource.com/external/github.com/open-source-parsers/jsoncpp.git@1.0.0",
-  "third_party/externals/libjpeg-turbo" : "https://github.com/libjpeg-turbo/libjpeg-turbo.git@c308d434160fbc33e3ed1cd59641d095c186501e",
+  "third_party/externals/libjpeg-turbo" : "https://github.com/libjpeg-turbo/libjpeg-turbo.git@1.5.3",
   "third_party/externals/libpng"        : "https://skia.googlesource.com/third_party/libpng.git@v1.6.33",
   "third_party/externals/libwebp"       : "https://chromium.googlesource.com/webm/libwebp.git@v0.6.0",
   "third_party/externals/microhttpd"    : "https://android.googlesource.com/platform/external/libmicrohttpd@748945ec6f1c67b7efc934ab0808e1d32f2fb98d",