ci: fix unsupported CVSS version: 4.0

[pranavpadmasali]

Current version of cargo deny does not support CVSS version: 4.0. Updated cargo deny package.

Fixes the following error.

2025-12-23 07:33:16 [ERROR] failed to load advisory database: parse error: error parsing /home/runner/.cargo/advisory-dbs/advisory-db-3157b0e258782691/crates/cap-primitives/RUSTSEC-2024-0445.md: parse error: TOML parse error at line 8, column 8
  |
8 | cvss = "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"
  |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
unsupported CVSS version: 4.0

make: *** [Makefile:48: deny] Error 1
Error: Process completed with exit code 2.

[Copilot]

Pull request overview

This PR updates the cargo-deny version from 0.18.3 to 0.18.9 to resolve an error caused by unsupported CVSS version 4.0 in the advisory database parsing.

Key Changes:

• Update cargo-deny from version 0.18.3 to 0.18.9 in the package build action

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