deps(worker): Update to pygit2 1.16.0

Author: nellh

services/datalad/Pipfile

@@ -17,7 +17,7 @@ falcon = "==3.1.3"
 requests = "*"
 PyJWT = ">=2"
 boto3 = "*"
-pygit2 = "==1.15.1"
+pygit2 = "==1.16.0"
 pygithub = "==2.4.0"
 charset-normalizer = "*"
 uvicorn = {extras = ["standard"], version = "*"}