fix(input): missing gc

inputs

   "{{ project_name }}.interval_padding": "{{ interval_padding }}",
   "{{ project_name }}.annovar_database": "{{ annovar_database }}",
   "{{ project_name }}.annotsv_database": "{{ annotsv_database }}",
+  "{{ project_name }}.gc": "{{ gc }}",
   "{{ project_name }}.disk_size": "{{ disk_size }}",
   "{{ project_name }}.cluster_config": "{{ cluster_config }}"
 }

workflow.wdl

   File germline_resource_tbi
   File annovar_database
   File annotsv_database
+  File gc
   
   File? regions
   Int? interval_padding