[cbuild2cmake] Add regions header file to link step dependencies

[brondani]

Fixes

• [Bug]: Changes in the linker regions file do not trigger a rebuild #379

Checklist

• 🤖 This change is covered by unit tests (if applicable).
• 🤹 Manual testing has been performed (if necessary).
• 🛡️ Security impacts have been considered (if relevant).
• 📖 Documentation updates are complete (if required).
• 🧠 Third-party dependencies and TPIP updated (if required).

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None

[qltysh]

Diff Coverage: The code coverage on the diff in this pull request is 100.0%.

Total Coverage: This PR will increase coverage by 0.02%.

File Coverage Changes

Path	File Coverage Δ	Indirect
pkg/maker/buildcontent.go	0.0

🛟 Help

• Diff Coverage: Coverage for added or modified lines of code (excludes deleted files). Learn more.

• Total Coverage: Coverage for the whole repository, calculated as the sum of all File Coverage. Learn more.

• File Coverage: Covered Lines divided by Covered Lines plus Missed Lines. (Excludes non-executable lines including blank lines and comments.)

  • Indirect Changes: Changes to File Coverage for files that were not modified in this PR. Learn more.

[github-actions]

Test Results

  6 files   30 suites   1s ⏱️
 94 tests  94 ✅ 0 💤 0 ❌
564 runs  564 ✅ 0 💤 0 ❌

Results for commit a583603.

[jkrech]

LGTM