Updated embedchain/examples/full_stack/docker-compose.yml to fix security vulnerability [yaml.docker-compose.security.no-new-privileges.no-new-privileges]

[anupamme]

Context and Purpose:

This PR automatically remediates a security vulnerability:

• Description: Service 'backend' allows for privilege escalation via setuid or setgid binaries. Add 'no-new-privileges:true' in 'security_opt' to prevent this.
• Rule ID: yaml.docker-compose.security.no-new-privileges.no-new-privileges
• Severity: HIGH
• File: embedchain/examples/full_stack/docker-compose.yml
• Lines Affected: 4 - 4

This change is necessary to protect the application from potential security risks associated with this vulnerability.

Solution Implemented:

The automated remediation process has applied the necessary changes to the affected code in embedchain/examples/full_stack/docker-compose.yml to resolve the identified issue.

Please review the changes to ensure they are correct and integrate as expected.

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