artifact_bucket_name should not be a required field

[arqgroup-rohits]

Subject of the issue

Describe your issue here.

Your environment

• version of sceptre (sceptre --version)
  Sceptre, version 4.5.2

• version of python (python --version)
  Python 3.11.8

• which OS/distro
  MacOS
  CodeBuild - aws/codebuild/amazonlinux2-x86_64-standard:5.0

Steps to reproduce

Tell us how to reproduce this issue. Please provide sceptre project files if possible,
you can use https://plnkr.co/edit/ANFHm61Ilt4mQVgF as a base.

SAM Package (https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-cli-command-reference-sam-package.html) now has an option to resolve-s3. This automatically creates a bucket in the region specified in the same package command.

This becomes easier to manage when it;s a cross region deployment.
In my case, pipeline is running in Sydney, but the deployment is in the Melbourne region.

Expected behaviour

Tell us what should happen
artifact_bucket_name - should be optional.

Actual behaviour

Tell us what happens instead

"'artifact_bucket_name' is a required property\n\nFailed validating 'required' in schema:\n {'properties': {'artifact_bucket_name': {'type': 'string'},\n 'artifact_prefix': {'type': 'string'},\n 'build_args': {'type': 'object'},\n 'package_args': {'type': 'object'},\n 'path': {'type': 'string'},\n 'skip_jinja_cleanup': {'type': 'boolean'}},\n 'required': ['path', 'artifact_bucket_name'],\n 'type': 'object'}\n\nOn instance:\n {'build_args': {'use-container': True},\n 'package_args': {'region': 'ap-southeast-4', 'resolve-s3': True},\n 'path': 'templates/lambda.yaml.j2'}"