Update 4103 DEPS for M83 branching

TBR=chrome-product-tpgm@google.com

Change-Id: I87f098cdb9c8da5178c0071e0548cdda59fb8e05
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2134801
Reviewed-by: Srinivas Sista <srinivassista@chromium.org>
Cr-Commit-Position: refs/branch-heads/4103@{#4}
Cr-Branched-From: 8ad47e8-refs/heads/master@{#756066}

DEPS

@@ -175,11 +175,11 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': '8ce842d38d0b32149e874d6855c91e8c68ba65a7',
+  'skia_revision': 'refs/heads/chrome/m83',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
-  'v8_revision': 'refs/heads/chromium/4103',
+  'v8_revision': 'refs/heads/8.3-lkgr',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.