bump r version to support native pipe (added 2021)

Author: tjmahr

DESCRIPTION

@@ -4,7 +4,7 @@ Title: Plotting for Bayesian Models
 Version: 1.12.0.9000
 Date: 2025-04-09
 Authors@R: c(person("Jonah", "Gabry", role = c("aut", "cre"), email = "jsg2201@columbia.edu"),
-             person("Tristan", "Mahr", role = "aut"),
+             person("Tristan", "Mahr", role = "aut", comment = c(ORCID = "0000-0002-8890-5116")),
              person("Paul-Christian", "Bürkner", role = "ctb"),
              person("Martin", "Modrák", role = "ctb"),
              person("Malcolm", "Barrett", role = "ctb"),
@@ -26,7 +26,7 @@ URL: https://mc-stan.org/bayesplot/
 BugReports: https://github.com/stan-dev/bayesplot/issues/
 SystemRequirements: pandoc (>= 1.12.3), pandoc-citeproc
 Depends:
-    R (>= 3.1.0)
+    R (>= 4.1.0)
 Imports:
     dplyr (>= 0.8.0),
     ggplot2 (>= 3.4.0),