Update dependabot (#749)

Author: lucacome

.github/dependabot.yml

@@ -15,14 +15,16 @@ updates:
           - "github.com/aws/aws-sdk-go-v2*"
 
   - package-ecosystem: pip
-    directory: /tests
+    directories:
+      - "**/*"
     schedule:
       interval: weekly
     ignore:
       - dependency-name: "boto3"
         update-types: ["version-update:semver-patch"]
 
   - package-ecosystem: docker
-    directory: /tests/docker
+    directories:
+      - "**/*"
     schedule:
       interval: weekly