Bump pip group for benchmark comparisions to fix security scanner reports (#1479)

Author: abhinavsingh

benchmark/requirements.txt

@@ -2,7 +2,7 @@ aiohttp==3.10.3
 # Blacksheep depends upon essentials_openapi which is pinned to pyyaml==5.4.1
 # and pyyaml>5.3.1 is broken for cython 3
 # See https://github.com/yaml/pyyaml/issues/724#issuecomment-1638587228
-# blacksheep==1.2.7
-starlette==0.19.1
-tornado==6.1
-uvicorn==0.16.0
+# blacksheep==2.0.7
+starlette==0.38.5
+tornado==6.4.1
+uvicorn==0.30.6