add security check exception for otp simplecheck

bwreg-webapp/src/main/java/edu/kit/scc/webreg/sec/SecurityFilter.java

@@ -112,6 +112,7 @@ public class SecurityFilter implements Filter {
 			path.startsWith("/error/") ||
 			path.startsWith("/oidc/") ||
 			path.startsWith("/ferest/") ||
+			path.startsWith("/rest/otp/simplecheck/") ||
 			path.equals("/favicon.ico")
 				) {
 			chain.doFilter(servletRequest, servletResponse);