CompatHelper: bump compat for DiffEqCallbacks to 4, (keep existing compat) (qutip#239)

Co-authored-by: CompatHelper Julia <[email protected]>

Author: 2 people

Project.toml

@@ -35,7 +35,7 @@ QuantumToolboxCUDAExt = "CUDA"
 ArrayInterface = "6, 7"
 CUDA = "5"
 DiffEqBase = "6"
-DiffEqCallbacks = "2 - 3.1, 3.8"
+DiffEqCallbacks = "2 - 3.1, 3.8, 4"
 DiffEqNoiseProcess = "5"
 FFTW = "1.5"
 Graphs = "1.7"