This is something to keep an eye on, and similar trends in other data have been posted here before. The most interesting piece of data is Figure 2 in the first link. For some reason that figure is left out of the versions in the other links. Data in Figure 2 indicates that the case fatality rate has increased in Israel after the vaccination campaign. The authors interpret this as evidence that the vaccine weakens the immune response (at least in a portion of the population), making them more likely to die than they would've been had they not been vaccinated. This is one possibility that would explain these data.
If you look at the total numbers, though, cases and deaths have dropped drastically over this time period (~220,000 cases at peak vs 220 cases in the most recent data point; ~1,400 deaths at peak vs ~20 deaths in the most recent data point). Because you're looking at percent case fatality, if the denominator (cases) decreases more than the numerator (deaths), that would also give you an increase in your final number. In other words, vaccines may not be making the situation worse, but for a small portion of the population, they may not protect from death.
The bigger question is why? It could be a genetic thing. It could be that these were very severe cases and would've been severe regardless of whether they were vaccinated or not. It could be that this population received a very large amount of virus that was able to outpace the immune response produced by vaccination. In any case, it's premature to conclude that vaccination weakens the immune response.
Regardless of how this shakes out, more information is needed about why these folks died.