Description of the bug

Updating the pipelines MHCquant and DIAproteomics to the template 1.13.1 resulted in an error calling the function:

NfcoreSchema.validateParameters(params, json_schema, log)

Unknown method invocation `containsKey` on JSONObject type

Steps to reproduce

The error occured both here:
nf-core/diaproteomics#103

and here:
nf-core/mhcquant#160