Update aliases.json (#24149)

arm-compute/quickstart-templates/aliases.json

@@ -86,6 +86,13 @@
             "version": "latest",
             "architecture": "x64"
           },
+          "SuseSles15SP3": {
+            "publisher": "SUSE",
+            "offer": "sles-15-sp3",
+            "sku": "gen2",
+            "version": "latest",
+            "architecture": "x64"
+          },
           "UbuntuLTS": {
             "publisher": "Canonical",
             "offer": "UbuntuServer",