python3-iso8601: upgrade 1.0.2 -> 1.1.0

e3b4ed3 Release 1.1.0
56da11c missed a comma
fde429d raise ParseError if we get an exception on is_iso8601()
21f5368 Add is_iso8601() function
406db6f Update license years

License-Update: copyright years updated.

Signed-off-by: Tim Orling <tim.orling@konsulko.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>