Upgrade Dependency Check Version, Config Role Name Change, EBServiceRole fix and AMI using SSM and other minor edits

[awsnand]

Issue #, if available:

• N/A

Description of changes:

• Upgrade dependency check version to 7.4.0
• Update AWS_ConfigRole
• Fixed EBServiceRole association and removed SSH,RDP access
• Leverage AMI Ids using SSM, removed SSHaccesss and updated description

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