Add error-on-s3-exception option

This adds a new boolean option named `error-on-s3-exception` to be able
to mark the job as failed if the cache could not be restored.

This can be combined with a retry-action so we can use it in some situations
where we want to retry the job when the cache could not be restored.

action.yml

@@ -43,6 +43,10 @@ inputs:
     description: "Use github actions/cache as fallback"
     required: false
     default: "true"
+  error-on-s3-exception:
+    description: "Whether to mark the job as failed or not depending on S3 exceptions."
+    required: false
+    default: "false"
   # zip-option:
   #   description: zip options
   #   required: false