Add non-ASCII characters to the CancelIfRegex tests
Add non-ASCII characters to the CancelIfRegex tests

These tests are trying different combinations of bytestrings and unicode
strings, but none of them had any actual non-ASCII characters, which can
lead to some issues going unnoticed.  So this adds a special character to
the query string.

azavea/python-omgeo,azavea/python-omgeo