build(deps): bump cachix/install-nix-action from 17 to 18

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 17 to 18.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Commits](https://github.com/cachix/install-nix-action/compare/v17...v18)

.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@v3
-    - uses: cachix/install-nix-action@v17
+    - uses: cachix/install-nix-action@v18
     - uses: cachix/cachix-action@v11
       with:
         # This cache is for the nixpkgs repo checks and should not be trusted or used elsewhere.

.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@v17
+    - uses: cachix/install-nix-action@v18
       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@v17
+      - uses: cachix/install-nix-action@v18
         with:
           # explicitly enable sandbox
           extra_nix_config: sandbox = true

.github/workflows/manual-nixpkgs.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@v17
+      - uses: cachix/install-nix-action@v18
         with:
           # explicitly enable sandbox
           extra_nix_config: sandbox = true

.github/workflows/manual-rendering.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: cachix/install-nix-action@v17
+      - uses: cachix/install-nix-action@v18
         with:
           # explicitly enable sandbox
           extra_nix_config: sandbox = true

.github/workflows/nixos-manual.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@v17
+    - uses: cachix/install-nix-action@v18
     - name: Check DocBook files generated from Markdown are consistent
       run: |
         nixos/doc/manual/md-to-db.sh

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

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: cachix/install-nix-action@v17
+      - uses: cachix/install-nix-action@v18
         with:
           nix_path: nixpkgs=channel:nixpkgs-unstable
       - name: setup