Signature for Types.week_of_month doesn't cover all posibilities

[tayjohno]

Steps to reproduce

Under certain circumstances there can be up to 6 distinct weeks in a month (like January of 2022), but the type representing the week number is defined as 1..5.

iex> Timex.week_of_month(2022,1,31)
6

January 2022 Calendar:

week  Su Mo Tu We Th Fr Sa

1                       01
2     02 03 04 05 06 07 08
3     09 10 11 12 13 14 15
4     16 17 18 19 20 21 22
5     23 24 25 26 27 28 29
6     30 31

Description of issue

Type definition found here

@type week_of_month :: 1..5

Incorrect linter warning about 6 being an invalid case: