Added test case for : chars in sequence

Updated the `testParenthesisInArrayConditions()` method to include test case for commit https://github.com/ozzyogkush/cakephp/commit/21c75062cb849f088d4c5b1f1f3c41ee74645621 where condition keys can have `:` or `?` keys in sequence. Mainly for Postgresql casting types using `::` syntax where you still may want to use the `BETWEEN` syntax.
Merge pull request #1 from ozzyogkush/1.3

Added test case for : chars in sequence