【Flutter】Could not resolve all artifacts for configuration ':classpath'. エラーでビルドできない

Flutter2でAndroidアプリのリリースビルドをしようとした際、以下のエラーが出てしましました。
解決方法をご教示いただけないでしょうか。

* What went wrong:                                                      
A problem occurred configuring root project 'android'.                  
> Could not resolve all artifacts for configuration ':classpath'.       
   > Could not download bundletool-0.14.0.jar (com.android.tools.build:bundletool:0.14.0)
      > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/bundletool/0.14.0/bundletool-0.14.0.jar'.
         > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/bundletool/0.14.0/bundletool-0.14.0.jar'.
            > dl.google.com                                             
                                                                        
* Try:                                                                  
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
                                                                        
* Get more help at https://help.gradle.org                              
                                                                        
BUILD FAILED in 1m 18s                                                  
Running Gradle task 'bundleRelease'...                                  
Running Gradle task 'bundleRelease'... Done                        67.2s
Gradle task bundleRelease failed with exit code 1