`besselj_zero` failing to return some zeros (v1.1.0)

In v1.1.0, the function `besselj_zero(n, j)` returns `0.0` for some pairs `(n, j)`:
```julia
using FunctionZeros

for n in 0:100
for j in 1:100
besselj_zero(n, j) == 0.0 && println(n, " ", j)
end
end
```

> 90 6

Other cases can be found by extending the loops to larger values (43 cases for `n in 0:1000` and `j in 1:1000`).