Bump apache-airflow-providers-sftp from 5.0.0 to 5.3.4

Bumps [apache-airflow-providers-sftp](https://github.com/apache/airflow) from 5.0.0 to 5.3.4.
- [Release notes](https://github.com/apache/airflow/releases)
- [Changelog](https://github.com/apache/airflow/blob/main/docker-stack-docs/changelog.rst)
- [Commits](apache/airflow@providers-sftp/5.0.0...providers-sftp/5.3.4)

---
updated-dependencies:
- dependency-name: apache-airflow-providers-sftp
  dependency-version: 5.3.4
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Pipfile

@@ -7,7 +7,7 @@ verify_ssl = true
 aiobotocore = "==2.19.0"
 apache-airflow = "==2.10.5"
 apache-airflow-providers-amazon = "==9.2.0"
-apache-airflow-providers-sftp = "==5.0.0"
+apache-airflow-providers-sftp = "==5.3.4"
 apache-airflow-providers-slack = "==9.0.0"
 apache-airflow-providers-ssh = "==4.0.0"
 boto3 = "==1.36.3"