Update generate-NOTICE.py to know about tzdata.

Also regenerate the NOTICE files. One had slipped behind.

Bug: 7012465
Change-Id: Ice2e909b521472eb1acd53d8151038bebe19984a
diff --git a/libc/tools/generate-NOTICE.py b/libc/tools/generate-NOTICE.py
index b7d23f7..5115317 100755
--- a/libc/tools/generate-NOTICE.py
+++ b/libc/tools/generate-NOTICE.py
@@ -20,7 +20,7 @@
         return True
     if path.endswith("/notice") or path.endswith("/readme") or path.endswith("/caveats"):
         return True
-    if path.endswith("/zoneinfo.dat") or path.endswith("/zoneinfo.idx") or path.endswith("/zoneinfo.version") or path.endswith("/zoneinfo/generate"):
+    if path.endswith("/tzdata") or path.endswith("/zoneinfo/generate"):
         return True
     return False