[mjsunit] Disable a flaky regression test on Arm

Bug: v8:8090
Change-Id: I6f8a4d2bcfa25bcc83f29e5fd39f9e72ba18d4ac
Reviewed-on: https://chromium-review.googlesource.com/1188132Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55394}

test/mjsunit/mjsunit.status

@@ -811,6 +811,12 @@
   'regress/regress-2185': [SKIP],
 }],  # (arch == arm or arch == arm64) and simulator_run
 
+##############################################################################
+['(arch == arm or arch == arm64)', {
+  # Flaky tests: https://crbug.com/v8/8090
+  'regress/regress-752764': [SKIP],
+}],  # (arch == arm or arch == arm64)
+
 ##############################################################################
 ['gcov_coverage', {
   # Tests taking too long.