Update ASSEMBLE_GISTIC_OUTPUT with new container

Aside getting the code in shape, this changes the names of the alterations:

- `focal` becomes `short`
- `broad` becomes `long`

The reason is that otherwise the terms conflicted with the official GISTIC terminology of focal and broad, sparking confusion.

Author: lbeltrame

modules/local/assemble_gistic_output/main.nf

@@ -4,7 +4,7 @@ process ASSEMBLE_GISTIC_OUTPUT {
 
     tag "Rearrange GISTIC2 output"
     label "process_single"
-    container "quay.io/dincalcilab/gistic-cli:0.4.5-0b35405"
+    container "ghcr.io/dincalcilab/gistic-cli:0.5.4-ade3d88"
 
     input:
         path gistic_folder