Removed the cloning of the final data in the attachment processor (#114)

* removed the cloning of the final data in the attachment processor

* fix linter

.golangci.yml

@@ -6,6 +6,9 @@ linters-settings:
   funlen:
     lines: 100
     statements: 80
+  cyclop:
+    # the minimal code complexity to report
+    max-complexity: 20
 
 issues:
   exclude-use-default: false
@@ -32,4 +35,6 @@ linters:
     - exhaustivestruct  # Enforce structures to be fully filled on instantiation - terrible with openpgp configs
     - paralleltest      # Detects missing usage of t.Parallel() method in your Go test
     - forbidigo         # Static analysis tool to forbid use of particular identifiers
-    - thelper           # Enforce test helper formatting
+    - thelper           # Enforce test helper formatting
+    - revive            # Force CamelCase instead of all caps
+    - cyclop            # Temp disabling because of a bug that ignores the setting TODO : enable it once the fix as been released