CompatHelper: bump compat for LsqFit to 0.13, (keep existing compat) (#68)

Co-authored-by: CompatHelper Julia <compathelper_noreply@julialang.org>

Author: github-actions[bot]

Project.toml

@@ -48,7 +48,7 @@ FileIO = "1.4"
 Interpolations = "0.12, 0.13"
 JLD2 = "0.2, 0.3, 0.4"
 KernelFunctions = "0.9.7"
-LsqFit = "0.11, 0.12"
+LsqFit = "0.11, 0.12, 0.13"
 MultivariateStats = "0.7, 0.8, 0.9"
 NaNMath = "0.3, 1"
 Optim = "1"