feat: add skip cleanup option (#1716)

Closes #1545

README.md

@@ -172,6 +172,16 @@ Sometimes, existing credentials in your runner can get in the way of the
 intended outcome. You can set the `unset-current-credentials` input to `true` to
 work around this issue.
 
+#### Skip the cleanup step
+By default, this action runs a post-job cleanup step that removes credentials
+from the environment. To skip this step, set the `AWS_SKIP_CLEANUP_STEP`
+environment variable to `true`:
+
+```yaml
+    env:
+      AWS_SKIP_CLEANUP_STEP: 'true'
+```
+
 #### Use an HTTP proxy
 
 If need use an HTTP proxy you can set it in the action manually. Additionally

action.yml

@@ -5,6 +5,7 @@ runs:
   using: node24
   main: dist/index.js
   post: dist/cleanup/index.js
+  post-if: env.AWS_SKIP_CLEANUP_STEP != 'true'
 branding:
   color: orange
   icon: cloud