Metadata updates for release 8.13.53 (#3781)

Author: rohininidhi

.gitignore

@@ -1,5 +1,14 @@
-target/
-!tools/java/cpp-build/target/cpp-build-1.0-SNAPSHOT-jar-with-dependencies.jar
-build/
-lib/
-generated/
+# Ignore build directories and any files generated by the update script.
+cpp/build/
+cpp/src/phonenumbers/geocoding/geocoding_data.cc
+cpp/src/phonenumbers/phonemetadata.pb.*
+cpp/src/phonenumbers/phonenumber.pb.*
+cpp/test/phonenumbers/geocoding/geocoding_test_data.cc
+java/build/
+java/demo/war/WEB-INF/classes/
+java/demo/war/WEB-INF/lib/
+java/**/target/
+# Ignore the logs directory
+/logs/
+# Ignore ourselves because this is not intended to be submitted.
+/.gitignore