redo metrics tracking for requests, fixes bug wherere some requests were marked as pending, even though they had finished (#24)

requirements.txt

@@ -1,4 +1,4 @@
-aiohttp==3.10.1
+aiohttp[speedups]==3.10.1
 anyio~=4.4
 lib~=4.0
 nltk~=3.9
@@ -6,5 +6,5 @@ psutil~=6.0
 pycryptodome~=3.20
 Requests~=2.32
 transformers~=4.52
-utils~=1.0
+utils==1.0.*
 hf_transfer>=0.1.9