[split] bump util to 6.3.7-SNAPSHOT - bump util to 6.3.7-SNAPSHOT - release 6.3.6 of util - update changelog
[split] bump util to 6.3.7-SNAPSHOT - bump util to 6.3.7-SNAPSHOT - release 6.3.6 of util - update changelog

RB_ID=155372
TBR=true

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