Roll Syzygy DEPS to 0.8.5.0

Version 0.8.5.0

[cec4a29a57] Add support for rate targeted heaps
[562794745b] Add support for more AVX2 instructions.

BUG=454269

Review URL: https://codereview.chromium.org/880573006

Cr-Commit-Position: refs/heads/master@{#314916}

DEPS

@@ -715,7 +715,7 @@ hooks = [
     'action': ['python',
                'src/build/get_syzygy_binaries.py',
                '--output-dir=src/third_party/syzygy/binaries',
-               '--revision=f0332d538f3eb84c2a55a3d0506a4a0b58d1c09e',
+               '--revision=79621b5523205997ae9f689efb7f299973c87a8c',
                '--overwrite',
     ],
   },