Fix SK translation

Fixing invalid JSON file with SK translation. And gave some love to the unit tests.

Configuration fix

Adding the language broke configuration in some combinations with subdiv. This should fix it (tested in different combinations, hopefully).

Fix config with no language

Bugfix #56 , and config flow for countries with no languages.

HA updated holidays library

Finally with the localisation support.

Fix manifest

CI/CI workflow fixing manifest formatting. Should fix #50 in the recent releases.

Update

#48 Added Ukrainian and Russian translations (thanks @vlad36N )
Updating dependency on holidays package to be the same as Home Assistant.

Improvement POP holidays

Check holidays to pop over multiple years. Should fix #45

Bugfix

Fix

#44 Fixing a weird issue with observed two holidays in one day, where one was observed and the other not. This caused an issue in creating the list of holidays to pop, in the configuration. This should fix it.

Bugfix excluding country

Bugfixes

Fix #43 - unable to configure after excluding holidays

Bugfix for countries with no subdiv

Bugfix

Configuration failed for countries with no subdiv (#41)