Update DESCRIPTION, upversion formatters minimal version to 0.5.9 (#190)

# Pull Request

<!--- Replace `#nnn` with your issue link for reference. -->

Fixes #nnn

Signed-off-by: Joe Zhu <[email protected]>

DESCRIPTION

@@ -28,21 +28,21 @@ URL: https://github.com/insightsengineering/tern.mmrm,
 BugReports: https://github.com/insightsengineering/tern.mmrm/issues
 Depends:
     R (>= 3.6),
-    tern (>= 0.9.4)
+    tern (>= 0.9.5)
 Imports:
     checkmate (>= 2.1.0),
     cowplot,
     dplyr (>= 1.1.0),
     emmeans (>= 1.10.4),
-    formatters (>= 0.5.6),
+    formatters (>= 0.5.9),
     generics,
     ggplot2,
     lifecycle (>= 0.2.0),
     magrittr,
     mmrm (>= 0.3.5),
     parallelly (>= 1.25.0),
     rlang (>= 1.0.1),
-    rtables (>= 0.6.7),
+    rtables (>= 0.6.9),
     stats,
     tidyr (>= 0.8.3)
 Suggests: