Incrementing VERSION to 71.0.3578.5

TBR=abdulsyed@chromiue.org

Change-Id: I05d1740eb1eab049f858c089393dff94bf93729e
Reviewed-on: https://chromium-review.googlesource.com/c/1279369
Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/branch-heads/3578@{#8}
Cr-Branched-From: 4226ddf-refs/heads/master@{#599034}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=71
 MINOR=0
 BUILD=3578
-PATCH=4
+PATCH=5