sap_vm_provision: Use aws.aws.ec2_placement_group

[berndfinger]

See https://github.com/sap-linuxlab/community.sap_infrastructure/actions/runs/13410778230/job/37460272487?pr=86 for more details on why this is necessary.

See this page for a description of the community.aws.ec2_placement_group module.

See this page for a description of the amazon.aws.ec2_placement_group module.

[sean-freeman]

Migration of Ansible Module from community.aws Ansible Collection, to the amazon.aws Ansible Collection (maintained by Ansible/AWS team) as of 9.0.0. PR already merged