Use specific nextflow version in workflow

Author: adamd3

.github/workflows/ci.yml

@@ -22,9 +22,6 @@ jobs:
           # Test pipeline minimum Nextflow version
           - NXF_VER: "21.10.3"
             NXF_EDGE: ""
-          # Test latest edge release of Nextflow
-          - NXF_VER: ""
-            NXF_EDGE: "1"
     steps:
       - name: Check out pipeline code
         uses: actions/checkout@v2