Pin version of nf-validation

[apetkau]

Issue

An upcoming upgrade of the nf-validation plugin from 1.1.3 to 2.0.0 will make breaking changes (nextflow-io/plugins#66). Right now, this pipeline uses the latest version of nf-validation and so will stop functioning when this upgrade occurs.

Solution

1. Pin Nextflow plugin versions
   These should be pinned to specific versions (i.e., change to [email protected]). This pipeline does not use nf-iridanext so there is no need to change that version.

   iridanextexample/nextflow.config

   Lines 155 to 158 in 6079a65

   	// Nextflow plugins
   	plugins {
   	id 'nf-validation' // Validation of pipeline parameters and creation of an input channel from a sample sheet
   	}

2. Update version
   Update version to indicate a bug fix to 1.0.3:

   iridanextexample/nextflow.config

   Line 199 in 6079a65

   version = '1.0.2'

3. Update CHANGELOG.md to list the change. https://github.com/phac-nml/iridanextexample/blob/dev/CHANGELOG.md