solve() fails with new highs version

[jeffreyhanson]

The prioritizr package isn't compatible with the latest version of the highs package. When using the latest version of the highs package to solve a problem, we get an error about failed assertions. This is because the highs package now has more strict type checking of input values. See below for a reprex. I'll try and implement a bug fix ASAP.

---

# load packages
library(prioritizr)
library(highs)

# load data
sim_pu_raster <- get_sim_pu_raster()
sim_features <- get_sim_features()

# create problem
p <-
  problem(sim_pu_raster, sim_features) %>%
  add_min_set_objective() %>%
  add_relative_targets(0.1) %>%
  add_binary_decisions() %>%
  add_highs_solver(verbose = FALSE)

# try to solve problem
solve(p)
#> Error in (function (threads = 1L, time_limit = Inf, log_to_console = FALSE,  : 
#> Assertion on 'log_to_console' failed: Must be of type 'logical', not 'integer'.
#> Timing stopped at: 0.003 0 0.003