fix: Use fetch-level: 1 to check out trivy-repo in the release workflow

[DmitriyLewen]

Description

We got No space left on device error when checking out trivy-repo — https://github.com/aquasecurity/trivy/actions/runs/18374488962.

Currently, the workflow fetches all commits for this repo:

trivy/.github/workflows/release.yaml

Lines 37 to 42 in 2f695b9

	- name: Checkout trivy-repo
	uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
	with:
	repository: ${{ github.repository_owner }}/trivy-repo
	path: trivy-repo
	fetch-depth: 0

We can fetch only the latest commit and save ~15 GB.

➜ du -shm ./trivy-repo     
15456	./trivy-repo
➜ du -shm ./trivy-repo/.git
15117	./trivy-repo/.git

Test:

• https://github.com/DmitriyLewen/trivy/actions/runs/18398657919/job/52424913210
• https://github.com/DmitriyLewen/trivy-repo/tree/main/deb/pool/main/t/trivy

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).

[owenrumney]

LGTM

[DmitriyLewen]

@aqua-bot backport release/v0.67

[DmitriyLewen]

Backport PR created: #9638

[k2-source1]