chore(deps): bump cachix/install-nix-action from 27 to 31

[dependabot]

Bumps cachix/install-nix-action from 27 to 31.

Release notes

Sourced from cachix/install-nix-action's releases.

v31

Starting with v31, this action will use semantic versioning for releases. Major tags, like v31, will be bumped to point to the latest minor/patch release. This is in line with how most GitHub actions manage releases.

What's Changed

• nix: 2.26.3 -> 2.28.2 by @​Mic92 in cachix/install-nix-action#232
• nix: 2.24.9 -> 2.25.2 by @​Mic92 in cachix/install-nix-action#218
• ci: fix latest installer tests by @​sandydoo in cachix/install-nix-action#220
• ci: add ubuntu-24.04-arm to matrix by @​msgilligan in cachix/install-nix-action#221
• nix: 2.25.2 -> 2.26.2 by @​Mic92 in cachix/install-nix-action#226
• nix: 2.26.2 -> 2.26.3 by @​sandydoo in cachix/install-nix-action#228
• feat: Pin actions to hashes by @​l0b0 in cachix/install-nix-action#201
• chore(deps): bump actions/checkout from 4.1.1 to 4.2.2 by @​dependabot in cachix/install-nix-action#234
• docs: document how to provide AWS credentials to the nix-daemon by @​sandydoo in cachix/install-nix-action#235
• nix: 2.28.2 -> 2.28.3 by @​Mic92 in cachix/install-nix-action#236
• nix: 2.28.3 -> 2.29.0 by @​Mic92 in cachix/install-nix-action#239 Release notes: https://nix.dev/manual/nix/latest/release-notes/rl-2.29
• Automate nix updates in CI by @​Mic92 in cachix/install-nix-action#241
• nix: 2.29.0 -> 2.29.1 by @​github-actions in cachix/install-nix-action#243 [SECURITY] https://discourse.nixos.org/t/security-advisory-privilege-escalations-in-nix-lix-and-guix/66017

New Contributors

• @​msgilligan made their first contribution in cachix/install-nix-action#221
• @​github-actions made their first contribution in cachix/install-nix-action#243

Full Changelog: cachix/install-nix-action@v30...v31

v30

• Nix: 2.24.7 -> 2.24.9, fixing GHSA-6fjr-mq49-mm2c

v29

Bumps Nix to 2.24.7

v28

Nix 2.24.6 - GHSA-h4vv-h3jq-v493

Changelog

Sourced from cachix/install-nix-action's changelog.

Release

As of v31, releases of this action follow Semantic Versioning.

Publishing a new release

Publish the release

Draft a new release on GitHub:

• In Choose a tag, create a new tag, like v31.2.1, following semver.
• Click Generate release notes.
• Set as the latest release should be selected automatically.
• Publish release

Update the major tag

The major tag, like v31, allows downstream users to opt-in to automatic non-breaking updates.

This process follows GitHub's own guidelines: https://github.com/actions/toolkit/blob/main/docs/action-versioning.md

Fetch the latest tags

git pull --tags --force

Move the tag

git tag -fa v31

git push origin v31 --force

Update the release notes for the major tag

Find the release on GitHub: https://github.com/cachix/install-nix-action/releases

Edit the release and click Generate release notes. Edit the formatting and publish.

Commits

• f0fe604 ci: improve the automated nix bump title and commit message
• 607623b Merge pull request #243 from cachix/create-pull-request/patch
• f66ab70 nix: 2.29.0 -> 2.29.1
• 17fe5fb Merge pull request #241 from Mic92/nix-updates
• 86a92fe Merge pull request #239 from Mic92/nix-2.29
• 129de12 add github action to keep nix up-to-date
• f5e4dbf nix: 2.28.3 -> 2.29.0
• 5261181 Merge pull request #236 from Mic92/nix-2.28.3
• b2b89c6 nix: 2.28.2 -> 2.28.3
• 0c65bbe Merge pull request #235 from cachix/docs-aws-creds
• Additional commits viewable in compare view

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