Update Hera site config: remove haswell target in packages.yaml and add missing gcc compiler to compiler list in packages_oneapi.yaml (#1786)

Author: climbfuji

configs/sites/tier1/hera/packages.yaml

@@ -1,7 +1,8 @@
 packages:
   all:
+    # https://github.com/JCSDA/spack-stack/issues/1781
     # To support hecflow01
-    target: [haswell]
+    #target: [haswell]
     providers:
       zlib-api:: [zlib]
   zlib-api:

configs/sites/tier1/hera/packages_oneapi.yaml

@@ -1,6 +1,6 @@
 packages:
   all:
-    compiler:: [oneapi@2024.2.1]
+    compiler:: [oneapi@2024.2.1, gcc@13.3.0]
     providers:
       mpi:: [intel-oneapi-mpi@2021.13]
       # Remove the next three lines to switch to intel-oneapi-mkl