chore(deps): update dependency borgbackup to v1.4.3 (#3921)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

requirements.txt

@@ -3,7 +3,7 @@ ahocorasick-rs==1.0.3
 aliyun-python-sdk-alimt==3.2.0
 altcha==0.2.0
 argon2-cffi==25.1.0
-borgbackup==1.4.2
+borgbackup==1.4.3
 boto3==1.42.0
 celery==5.5.3
 certifi==2025.11.12