fix test-case from gh-2153 (test-suite running in year 2005)

fail2ban/tests/files/logs/dovecot

@@ -43,7 +43,7 @@ Jan 29 05:13:50 mail dovecot: auth: passwd-file(username,1.2.3.4): unknown user
 # failJSON: { "time": "2005-01-29T13:54:06", "match": true , "host": "192.0.2.5" }
 Jan 29 13:54:06 auth-worker(22401): Info: sql(admin@example.de,192.0.2.5,<n4JLdHNVngZGpV2j>): unknown user
 
-#failJSON: { "time": "2018-06-11T13:57:17", "match": true, "host": "192.168.144.226" }
+#failJSON: { "time": "2005-06-11T13:57:17", "match": true, "host": "192.168.144.226" }
 Jun 11 13:57:17 main dovecot: auth: sql(admin@example.ru,192.168.144.226,<6rXunFtu493AqJDi>): Password mismatch
 
 # failJSON: { "time": "2005-01-29T14:38:51", "match": true , "host": "192.0.2.6", "desc": "PAM Permission denied (gh-1897)" }