chore: update dependabot gomod path (#189)

Author: Jonathan Yu

.github/dependabot.yml

@@ -17,7 +17,7 @@ updates:
           - version-update:semver-patch
 
   - package-ecosystem: "gomod"
-    directory: "/"
+    directory: "/tests"
     schedule:
       interval: "daily"
       time: "06:00"