Corrected mismatch between route and tests

internal/upstream/routes.go

@@ -212,7 +212,7 @@ func (u *upstream) configureRoutes() {
 		route("PUT", apiPattern+`v4/projects/[0-9]+/packages/nuget/`, upload.Accelerate(api, signingProxy)),
 
 		// PyPI Artifact Repository
-		route("PUT", apiPattern+`v4/projects/[0-9]+/packages/pypi/`, upload.Accelerate(api, signingProxy)),
+		route("POST", apiPattern+`v4/projects/[0-9]+/packages/pypi`, upload.Accelerate(api, signingProxy)),
 
 		// We are porting API to disk acceleration
 		// we need to declare each routes until we have fixed all the routes on the rails codebase.