[Rspamd] Adjust default values for (perm) failures of DKIM and SPF

data/conf/rspamd/local.d/policies_group.conf

@@ -3,6 +3,15 @@ symbols = {
         score = 0.0;
     }
     "R_SPF_FAIL" {
-        score = 4.0;
+        score = 7.0;
+    }
+    "R_SPF_PERMFAIL" {
+        score = 7.0;
+    }
+    "R_DKIM_REJECT" {
+        score = 7.0;
+    }
+    "R_DKIM_PERMFAIL" {
+        score = 7.0;
     }
 }