Incrementing VERSION to 90.0.4430.8

TBR=mmoss@chromium.org

Change-Id: Ic942c242aecd3f0a2eea4d9b10634a41f51d7574
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2725825
Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/4430@{#20}
Cr-Branched-From: e5ce7dc-refs/heads/master@{#857950}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=90
 MINOR=0
 BUILD=4430
-PATCH=7
+PATCH=8