CompatHelper: bump compat for RData to 0.8, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -87,7 +87,7 @@ PGFPlotsX = "1"
 PredictMDAPI = "0.3"
 PredictMDExtra = "0.13.1"
 ProgressMeter = "1"
-RData = "0.6, 0.7"
+RData = "0.6, 0.7, 0.8"
 RDatasets = "0.6.4"
 ROCAnalysis = "0.3"
 Requires = "1.0.1"