I don't know which country exactly, but the next decade will see a scenario in which a country that comes third one year will come first the following year, and I think it's likely to happen around 2024.
This has happened ten times over the contest:
*France: third in 1959, first in 1960
*Italy: third in 1963, first in 1964
*France again: third in 1968, first in 1969 (well, joint first, but if it counts as a win then it counts)
*Netherlands: third in 1974, first in 1975
*United Kingdom: third in 1980, first in 1981
*Sweden: third in 1983, first in 1984
*Greece: third in 2004, first in 2005
*Russia: third in 2007, first in 2008
*Sweden again: third in 2011, first in 2012
*Sweden
again: third in 2014, first in 2015
So that's a thing that's happened every Eurovision decade except the nineties, and often around years ending in a four. So I am making my prediction that either the country that gets third place in 2023 will win in 2024, or the third place in 2024 will win in 2025. And that it seems to be Sweden a majority of the time, so I am predicting a Sweden win for either 2024 or 2025