chore: FFmpeg bump version to n7.1.1

Author: cxfksword

README.md

@@ -1,7 +1,7 @@
 # MPVKit
 
 [![mpv](https://img.shields.io/badge/mpv-v0.39.0-blue.svg)](https://github.com/mpv-player/mpv)
-[![ffmpeg](https://img.shields.io/badge/ffmpeg-n7.1-blue.svg)](https://github.com/FFmpeg/FFmpeg)
+[![ffmpeg](https://img.shields.io/badge/ffmpeg-n7.1.1-blue.svg)](https://github.com/FFmpeg/FFmpeg)
 [![license](https://img.shields.io/github/license/mpvkit/MPVKit)](https://github.com/mpvkit/MPVKit/main/LICENSE)
 
 > MPVKit is only suitable for learning `libmpv` and will not be maintained too frequently.

Sources/BuildScripts/XCFrameworkBuild/main.swift

@@ -50,7 +50,7 @@ enum Library: String, CaseIterable {
         case .libmpv:
             return "v0.39.0"
         case .FFmpeg:
-            return "n7.1"
+            return "n7.1.1"
         case .openssl:
             return "3.2.0"
         case .gnutls: