Merge pull request #301 from JuliaSymbolics/compathelper/new_version/2021-06-17-18-59-17-243-2376522495

CompatHelper: bump compat for "AbstractAlgebra" to "0.18"

Author: shashi

Project.toml

@@ -21,7 +21,7 @@ StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 TimerOutputs = "a759f4b9-e2f1-59dc-863e-4aeb61b1ea8f"
 
 [compat]
-AbstractAlgebra = "0.9, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17"
+AbstractAlgebra = "0.9, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18"
 AbstractTrees = "0.3"
 ChainRulesCore = "0.9, 0.10"
 Combinatorics = "1.0"