fix: Request 28.GB of memory

Technically we could probably get away with 30 on Genomics, but some of
the nodes in the normal queue have 28.GB so that's why jobs fail unexpectedly.

sinfo --format "%.10P %.10l %.6D %.6m %N"
 PARTITION  TIMELIMIT  NODES MEMORY NODELIST
     debug    2:00:00      2  32106 compute-7-6-[0-1]
   normal* 4-00:00:00    110 28076+ compute-1-8-[0-19],compute-7-2-[20-39],compute-7-3-[8-39],compute-7-6-[2-39]
  genomics 7-00:00:00     16  32106 compute-7-2-[0-15]
      128s 4-00:00:00      8 128000 compute-2-6-[16-23]
      256i 4-00:00:00     16 220000 compute-1-1-[0-15]
      256h 4-00:00:00     10 256000 compute-2-6-[1-10]
       Kim 7-00:00:00      1 128000 compute-2-4-0

conf/utd_ganymede.config

@@ -22,13 +22,13 @@ singularity {
 def membership = "groups".execute().text
 
 def select_queue = { memory, cpu ->
-    if (memory <= 30.GB && cpu <= 16 && membership.contains('genomics')) {
+    if (memory <= 28.GB && cpu <= 16 && membership.contains('genomics')) {
         return 'genomics,normal'
     }
-    if (memory > 30.GB && memory <= 125.GB && cpu <= 12 && membership.contains('kim')) {
+    if (memory > 28.GB && memory <= 125.GB && cpu <= 12 && membership.contains('kim')) {
         return 'Kim,128s'
     }
-    if (memory > 30.GB && memory <= 125.GB && cpu <= 16) {
+    if (memory > 28.GB && memory <= 125.GB && cpu <= 16) {
         return '128s'
     }
     if (memory <= 250.GB && cpu <= 28) {