build(deps): bump cachix/install-nix-action from 25 to 26

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 25 to 26.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Commits](6004951b18...8887e596b4)

---
updated-dependencies:
- dependency-name: cachix/install-nix-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/basic-eval.yml

@@ -19,7 +19,7 @@ jobs:
     # we don't limit this action to only NixOS repo since the checks are cheap and useful developer feedback
     steps:
     - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-    - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+    - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
     - uses: cachix/cachix-action@18cf96c7c98e048e10a83abd92116114cd8504be # v14
       with:
         # This cache is for the nixpkgs repo checks and should not be trusted or used elsewhere.

.github/workflows/check-by-name.yml

@@ -98,7 +98,7 @@ jobs:
           base=$(mktemp -d)
           git worktree add "$base" "$(git rev-parse HEAD^1)"
           echo "base=$base" >> "$GITHUB_ENV"
-      - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
       - name: Fetching the pinned tool
         # Update the pinned version using pkgs/test/nixpkgs-check-by-name/scripts/update-pinned-tool.sh
         run: |

.github/workflows/check-maintainers-sorted.yaml

@@ -16,7 +16,7 @@ jobs:
         with:
           # pull_request_target checks out the base branch by default
           ref: refs/pull/${{ github.event.pull_request.number }}/merge
-      - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
         with:
           # explicitly enable sandbox
           extra_nix_config: sandbox = true

.github/workflows/editorconfig.yml

@@ -28,7 +28,7 @@ jobs:
       with:
         # pull_request_target checks out the base branch by default
         ref: refs/pull/${{ github.event.pull_request.number }}/merge
-    - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+    - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
       with:
         # nixpkgs commit is pinned so that it doesn't break
         # editorconfig-checker 2.4.0

.github/workflows/manual-nixos.yml

@@ -18,7 +18,7 @@ jobs:
         with:
           # pull_request_target checks out the base branch by default
           ref: refs/pull/${{ github.event.pull_request.number }}/merge
-      - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
         with:
           # explicitly enable sandbox
           extra_nix_config: sandbox = true

.github/workflows/manual-nixpkgs.yml

@@ -19,7 +19,7 @@ jobs:
         with:
           # pull_request_target checks out the base branch by default
           ref: refs/pull/${{ github.event.pull_request.number }}/merge
-      - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
         with:
           # explicitly enable sandbox
           extra_nix_config: sandbox = true

.github/workflows/nix-parse.yml

@@ -29,7 +29,7 @@ jobs:
         # pull_request_target checks out the base branch by default
         ref: refs/pull/${{ github.event.pull_request.number }}/merge
       if: ${{ env.CHANGED_FILES && env.CHANGED_FILES != '' }}
-    - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+    - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
       with:
         nix_path: nixpkgs=channel:nixpkgs-unstable
     - name: Parse all changed or added nix files

.github/workflows/update-terraform-providers.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-      - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
         with:
           nix_path: nixpkgs=channel:nixpkgs-unstable
       - name: setup