fix(c): don't skip conan files from file-patterns and scan .conan2 cache dir

[DmitriyLewen]

Description

This PR fixes detected issues for conan.lock files:

• scan .conan2 fir (and CONAN_HOME env) to detect licenses
• don't skip files from file-patterns

Related issues

• Close bug(conan): file filters for conan lock no longer working #6946
• Close bug(conan): Trivy doesn't parse the .conan2/p directory to detect the license for the v2 lock file. #6931

Related PRs

• feat(c): add license support for conan lock files #6329
• feat(vuln): Handle scanning conan v2.x lockfiles #6357

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).