Add bot emails in `renovate.json`

Followup on https://github.com/android/nowinandroid/pull/1766

.github/renovate.json

@@ -7,6 +7,8 @@
     "main"
   ],
   "gitIgnoredAuthors": [
-    "41898282+github-actions[bot]@users.noreply.github.com"
+    "41898282+github-actions[bot]@users.noreply.github.com",
+    "github-actions[bot]@users.noreply.github.com",
+    "renovate[bot]@users.noreply.github.com"
   ]
 }