[abacus4] Fix microarchitecture

data/grid5000/sites/rennes/clusters/abacus4/nodes/abacus4-1.json

@@ -181,7 +181,7 @@
     "clock_speed": 2650000000,
     "ht_capable": true,
     "instruction_set": "x86-64",
-    "microarchitecture": "Zen 3",
+    "microarchitecture": "Skylake",
     "microcode": "0x2007006",
     "model": "Intel Xeon",
     "other_description": "Intel(R) Xeon(R) Silver 4114 CPU @ 2.20GHz",

input/grid5000/sites/rennes/clusters/abacus4/abacus4.yaml

@@ -16,7 +16,7 @@ nodes:
       besteffort: true
       max_walltime: 604800
     processor:
-      microarchitecture: Zen 3
+      microarchitecture: Skylake
       clock_speed: 2650000000
     software:
       standard-environment: debian11-x64-std