[fix] Clamav score for FP CLAM_SECI_SPAM symbol

Decrease CLAM_SECI_SPAM score to 1 instead of 5 to low quality of database and significant false-positive rate

data/conf/rspamd/local.d/composites.conf

@@ -76,7 +76,7 @@ ENCRYPTED_CHAT {
 CLAMD_SPAM_FOUND {
   expression = "CLAM_SECI_SPAM & !MAILCOW_WHITE";
   description = "Probably Spam, Securite Spam Flag set through ClamAV";
-  score = 5;
+  score = 1;
 }
 
 CLAMD_BAD_PDF {