chore: update .gitignore to match master

Florence Bockting · Florence Bockting · commit 496c4359f013 · 2026-04-02T12:00:17.000+03:00
diff --git a/.gitignore b/.gitignore
@@ -15,4 +15,5 @@ CRAN-SUBMISSION
 release-prep.R
 
 # vscode/positron/etc settings
-.vscode/*
+.vscode/*
+Rplots.pdf
