[FIX] .travis.yml: Correct version

.travis.yml

@@ -14,7 +14,7 @@ python:
 
 env:
   global:
-  - VERSION="8.0" TESTS="0" LINT_CHECK="0" TRANSIFEX="0"
+  - VERSION="9.0" TESTS="0" LINT_CHECK="0" TRANSIFEX="0"
   - TRANSIFEX_USER='transbot@odoo-community.org'
   - secure: NUsXwVrMntcqge1ozKW+DSkP7dq+Rla6JVvFF2c89/g+zJaIqQRi8EQBLoqNwCdMk+rjpQeZt/JPELjH+EzPcmGddhDxOgVB3nUT9LvFXGCHF+NjmHXqyba4tuc7BnpG1WDD+rSlxVCt1aIjNIhhaZ4ic0rCWpKNYu/yFTsmChc=
   matrix: