lower compat of DataFrames

Author: hhaensel

Project.toml

@@ -8,6 +8,6 @@ DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
 Stipple = "4acbeb90-81a0-11ea-1966-bdaff8155998"
 
 [compat]
-DataFrames = "1.8.2"
+DataFrames = "1.7"
 Stipple = "0.27.23, 0.28, 0.29, 0.30, 0.31"
 julia = "1.6"