Update requirements.txt

requirements.txt

@@ -3,7 +3,9 @@ sentence-transformers>=2.4,<3
 fastapi==0.111.0
 uvicorn[standard]==0.29.0
 
-# ---- pins that remove the runtime error ----
+#  numba/umap pin that avoids the cache crash
 numba<=0.56.4
-umap-learn==0.5.5        # works with older numba
-hdbscan==0.8.33          # BERTopic dependency, keep in sync
+umap-learn==0.5.5
+
+#  wheel exists for cp310 so no compiler needed
+hdbscan>=0.8.34