Depend only on dev testthat now that the PR has been merged

DavisVaughan · DavisVaughan · commit 7a479d84317f · 2022-08-23T20:20:22.000-04:00
diff --git a/DESCRIPTION b/DESCRIPTION
@@ -61,4 +61,4 @@ Roxygen: list(markdown = TRUE)
 RoxygenNote: 7.1.2
 SystemRequirements: C++11
 Remotes:
-    r-lib/testthat#1673
+    r-lib/testthat
