Update no_municipalities.py to reflect recent changes to norwegian counties

[hakosl]

Update list of Norwegian counties(fylker) according to changes at the start of 2024: https://en.wikipedia.org/wiki/Counties_of_Norway#List_of_counties

[hakosl]

I fixed the tests

[benkonrath]

As a follow up to Claude's comment about the changelog, maybe we should use the same procedure as we did with the 3.1 release when we had breaking data changes.

1. Add a warning to NOMunicipalitySelect.

import warnings

class NOMunicipalitySelect(Select):
    def __init__(self, attrs=None):
        warnings.warn("Choices have changed for NOMunicipalitySelect in localflavor 4.1. See changelog for details.")
        super().__init__(attrs, choices=MUNICIPALITY_CHOICES)

2. Be very clear about the breaking change at the start of the changelog and provide instructions. The 3.1 release notes are a good example:

https://github.com/django/django-localflavor/blob/master/docs/changelog.rst#31---2021-05-28

@hakosl What do you think?