CompatHelper: bump compat for Compat to 4, (keep existing compat) (#3)

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

Author: github-actions[bot]

Project.toml

@@ -7,8 +7,8 @@ version = "0.1.0"
 Compat = "34da2185-b29b-5c13-b0c7-acf172513d20"
 
 [compat]
+Compat = "3.40, 4"
 julia = "1.6"
-Compat = "3.40"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"