build(deps): bump github.com/gorilla/mux from 1.7.3 to 1.7.4

Bumps [github.com/gorilla/mux](https://github.com/gorilla/mux) from 1.7.3 to 1.7.4.
- [Release notes](https://github.com/gorilla/mux/releases)
- [Commits](https://github.com/gorilla/mux/compare/v1.7.3...v1.7.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

vendor/github.com/gorilla/mux/middleware.go

@@ -58,22 +58,17 @@ func CORSMethodMiddleware(r *Router) MiddlewareFunc {
 func getAllMethodsForRoute(r *Router, req *http.Request) ([]string, error) {
 	var allMethods []string
 
-	err := r.Walk(func(route *Route, _ *Router, _ []*Route) error {
-		for _, m := range route.matchers {
-			if _, ok := m.(*routeRegexp); ok {
-				if m.Match(req, &RouteMatch{}) {
-					methods, err := route.GetMethods()
-					if err != nil {
-						return err
-					}
-
-					allMethods = append(allMethods, methods...)
-				}
-				break
+	for _, route := range r.routes {
+		var match RouteMatch
+		if route.Match(req, &match) || match.MatchErr == ErrMethodMismatch {
+			methods, err := route.GetMethods()
+			if err != nil {
+				return nil, err
 			}
-		}
-		return nil
-	})
 
-	return allMethods, err
+			allMethods = append(allMethods, methods...)
+		}
+	}
+
+	return allMethods, nil
 }