Add navigation-cc+reviews@chromium.org to the navigation watchlist.

Change-Id: I4c97da02e2106e2214e4a978f4c5a037365ebee4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2035551Reviewed-by: Rakina Zata Amni <rakina@chromium.org>
Commit-Queue: Fergal Daly <fergal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#738492}

WATCHLISTS

@@ -2531,7 +2531,8 @@
     'navigation': ['alexmos+watch@chromium.org',
                    'creis+watch@chromium.org',
                    'dom+watch@chromium.org',
-                   'nasko+codewatch@chromium.org'],
+                   'nasko+codewatch@chromium.org',
+                   'navigation-cc+reviews@chromium.org'],
     'net': ['net-reviews@chromium.org'],
     'net_base': ['bnc+watch@chromium.org',
                  'juke+watch@chromium.org'],