CompatHelper: bump compat for SymbolicUtils in [weakdeps] to 2, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -39,7 +39,7 @@ Optim = "0.19, 1"
 PackageExtensionCompat = "1"
 PrecompileTools = "1"
 Reexport = "1"
-SymbolicUtils = "0.19, ^1.0.5"
+SymbolicUtils = "0.19, ^1.0.5, 2"
 Zygote = "0.6"
 julia = "1.6"