Use directories to glob all benchmark directories

Author: emmatyping

.github/dependabot.yml

@@ -10,7 +10,7 @@ updates:
   # however, we can ignore all dependencies in the data-files
   # directory which is equivalent if a bit slower
   - package-ecosystem: "pip"
-    directory: "/pyperformance/data-files"
+    directories: "/pyperformance/data-files/benchmarks/**/"
     schedule:
       interval: "monthly"
     ignore: