CompatHelper: bump compat for IntervalArithmetic to 0.20, (keep existing compat) (#7)

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

Author: github-actions[bot]

Project.toml

@@ -23,7 +23,7 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 [compat]
 ChainRulesCore = "0.10, 0.9, 1"
 ForwardDiff = "0.10"
-IntervalArithmetic = "0.17, 0.18, 0.19"
+IntervalArithmetic = "0.17, 0.18, 0.19, 0.20"
 JuMP = "0.21"
 MathOptInterface = "0.9"
 NamedTupleTools = "0.13"