chore(travis): set Timezone env var to "America/Sao_Paulo"

Author: fczuardi

.travis.yml

@@ -11,6 +11,7 @@ before_install:
   - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.3.2
   - export PATH="$HOME/.yarn/bin:$PATH"
   - export BRANCH="${TRAVIS_PULL_REQUEST_BRANCH:-$TRAVIS_BRANCH}"
+  - export TZ="America/Sao_Paulo"
   - git config remote.origin.fetch '+refs/heads/*:refs/remotes/origin/*'
   - git fetch --all
   - git checkout "$BRANCH"