Update requirements.txt

test/acceptance/requirements.txt

@@ -2,7 +2,7 @@ lettuce==0.2.20
 # Blindly update from 2.20.0 (test/acceptance is no longer in use)
 requests==2.31.0
 xmltodict==0.9.0
-pymongo==4.6.3
+pymongo==4.6.3  # blindly changed from 2.7.2 due to vulnerability check in github
 dict2xml==1.3
 git+https://github.com/telefonicaid/lettuce-tools.git#egg=lettuce_tools
 git+https://visitor:visitor@pdihub.hi.inet/fiware/fiware-iotqaUtils@master