fix: 🐛 Fix missing execute statement in statistics filter

Author: Dominik Frantisek Bucik

perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/filters/impl/ProxyStatisticsFilter.java

@@ -327,6 +327,7 @@ private void updateLogin(Connection c, Long idpId, Long spId, String userId) {
 			ps.setLong(2, idpId);
 			ps.setLong(3, spId);
 			ps.setString(4, userId);
+			ps.execute();
 			log.debug("{} - Updated login count by 1 for combination: idpId={}, spId={}, userId={}",
 					filterName, idpId, spId, userId);
 		} catch (SQLException ex) {