Support for configuration cache

[jimirocks]

Hello, here is what gradle reports when configuration cache is enabled:

 1 problem was found storing the configuration cache.
Execution failed for task ':uploadDist'.
- Task `:uploadDist` of type `io.jumpco.open.gradle.s3.S3Upload`: invocation of 'Task.project' at execution time is unsupported.
> java.lang.NullPointerException (no error message)
  See https://docs.gradle.org/8.6/userguide/configuration_cache.html#config_cache:requirements:use_project_during_execution

And of course upload fail with:

Caused by: java.lang.NullPointerException
	at io.jumpco.open.gradle.s3.S3Upload.getAwsAccessKeyId(S3Upload.java:84)
	at io.jumpco.open.gradle.s3.S3Upload_Decorated.getAwsAccessKeyId(Unknown Source)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)