Update dependency mlflow to v2.21.1 (#197)

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

Author: renovate[bot]

requirements.txt

@@ -1,5 +1,5 @@
 fastapi==0.115.12
-mlflow==2.21.0
+mlflow==2.21.1
 numpy==1.26.4
 pandas==2.2.3
 pyarrow==14.0.2