CompatHelper: bump compat for MutableArithmetics to 1, (keep existing compat) (#193)

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

Author: github-actions[bot]

Project.toml

@@ -12,7 +12,7 @@ MutableArithmetics = "d8a4904e-b15c-11e9-3269-09a3773c0cb0"
 [compat]
 DataStructures = "0.17.7, 0.18"
 DynamicPolynomials = "0.4.1"
-MutableArithmetics = "0.3"
+MutableArithmetics = "0.3, 1"
 TypedPolynomials = "0.3.1"
 julia = "1"