fix: Return next handlerFunc for Ping instead of nil

Return next handlerFunc for Ping instead of nil in VaultAuthenticationHandlerFunc.

Signed-off-by: Lindsey Cheng <[email protected]>

bootstrap/handlers/auth_middleware.go

@@ -53,7 +53,7 @@ func VaultAuthenticationHandlerFunc(secretProvider interfaces.SecretProviderExt,
 		return func(c echo.Context) error {
 			// Skip the JWT authorization check for Ping request
 			if c.Path() == common.ApiPingRoute {
-				return nil
+				return inner(c)
 			}
 
 			r := c.Request()