fix(deps): ignore nix-lib in dependabot nix updates

[Teebor-Choka]

Dependabot's nix ecosystem support rewrites version-pinned flake.nix refs and proposed a downgrade of nix-lib from v1.3.0 to v1.2.0 (hoprnet/hoprnet#8281), breaking tests that rely on runNextest added in v1.3.0. Adds an ignore rule so Dependabot skips nix-lib version pins; upgrades remain manual alongside any breaking API changes.

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: a75879c9-3d0f-4a71-bf7e-77ecea10aa5d

📥 Commits

Reviewing files that changed from the base of the PR and between 8d8d095 and 249b9d9.

📒 Files selected for processing (1)

• .github/dependabot.yml

📝 Walkthrough

Walkthrough

Updated the Dependabot Nix configuration to ignore automated updates for the nix-lib dependency in the root directory. Added comments documenting version-pinned reference comparison behavior and noting that related upgrades are managed manually.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly matches the change: ignoring nix-lib Dependabot updates in the Nix ecosystem.
Description check	✅ Passed	The description is directly related to the changeset and explains the Dependabot ignore rule and why it was added.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[github-actions]

🔎 Trivy Security Report

Target	Package	Installed	Severity	CVE
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	c-ares	1.34.6-r0	HIGH	CVE-2026-33630
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	curl	8.17.0-r1	HIGH	CVE-2026-5773
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	curl	8.17.0-r1	HIGH	CVE-2026-6276
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	libcrypto3	3.5.6-r0	HIGH	CVE-2026-45447
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	libcurl	8.17.0-r1	HIGH	CVE-2026-5773
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	libcurl	8.17.0-r1	HIGH	CVE-2026-6276
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	libexpat	2.7.5-r0	HIGH	CVE-2026-45186
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	libexpat	2.7.5-r0	HIGH	CVE-2026-56131
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	libexpat	2.7.5-r0	HIGH	CVE-2026-56408
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	libssl3	3.5.6-r0	HIGH	CVE-2026-45447
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	libxml2	2.13.9-r0	HIGH	CVE-2026-6732
europe-west3-docker.pkg.dev/hoprassociation/docker-images/hopr-admin:4.0.0-rc.2-commit.249b9d9-linux-amd64 (alpine 3.23.4)	nghttp2-libs	1.68.0-r0	HIGH	CVE-2026-27135