Update config.resources for bufr sounding job postsnd (NOAA-EMC#2917)

This PR updates the parm/config/gfs/config.resources and env/WCOSS2.env
files for the BUFR sounding job "postsnd." It includes adjustments to
resource settings such as tasks per node and memory allocations for
various GFS resolutions, including C768, C1152, and others.

Here are the proposed changes:

C768: 7 nodes, 21 tasks per node
C1152: 16 nodes, 9 tasks per node

env/WCOSS2.env

@@ -272,12 +272,12 @@ elif [[ "${step}" = "postsnd" ]]; then
     export OMP_NUM_THREADS=1
 
     export NTHREADS_POSTSND=${NTHREADS1}
-    export mpmd_opt="-ppn 21 ${mpmd_opt}"
-
     export NTHREADS_POSTSNDCFP=${threads_per_task_postsndcfp:-1}
     [[ ${NTHREADS_POSTSNDCFP} -gt ${max_threads_per_task} ]] && export NTHREADS_POSTSNDCFP=${max_threads_per_task}
     export APRUN_POSTSNDCFP="${launcher} -np ${ntasks_postsndcfp} ${mpmd_opt}"
 
+    export mpmd_opt="-ppn ${tasks_per_node} ${mpmd_opt}"
+
 elif [[ "${step}" = "awips" ]]; then
 
     export NTHREADS_AWIPS=${NTHREADS1}

parm/config/gfs/config.resources

@@ -1208,9 +1208,23 @@ case ${step} in
   "postsnd")
     walltime="02:00:00"
     export ntasks=141
-    threads_per_task=6
-    export tasks_per_node=21
     export ntasks_postsndcfp=9
+    case ${CASE} in
+      "C768")
+        tasks_per_node=21
+        threads_per_task=6
+        memory="23GB"
+        ;;
+      "C1152")
+        tasks_per_node=9
+        threads_per_task=14
+        memory="50GB"
+        ;;
+      *)
+        tasks_per_node=21
+        threads_per_task=6
+        ;;
+    esac
     export tasks_per_node_postsndcfp=1
     postsnd_req_cores=$(( tasks_per_node * threads_per_task ))
     if (( postsnd_req_cores > max_tasks_per_node )); then