build(deps): bump actions/checkout from 2 to 3

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2...v3)

.github/workflows/backport.yml

@@ -8,7 +8,7 @@ jobs:
     if: github.repository_owner == 'NixOS' && github.event.pull_request.merged == true && (github.event_name != 'labeled' || startsWith('backport', github.event.label.name))
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           # required to find all branches
           fetch-depth: 0

.github/workflows/basic-eval.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     # we don't limit this action to only NixOS repo since the checks are cheap and useful developer feedback
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: cachix/install-nix-action@v16
     # explicit list of supportedSystems is needed until aarch64-darwin becomes part of the trunk jobset
     - run: nix-build pkgs/top-level/release.nix -A tarball.nixpkgs-basic-release-checks --arg supportedSystems '[ "aarch64-darwin" "aarch64-linux" "x86_64-linux" "x86_64-darwin"  ]'

.github/workflows/editorconfig.yml

@@ -24,7 +24,7 @@ jobs:
     - name: print list of changed files
       run: |
         cat "$HOME/changed_files"
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         # pull_request_target checks out the base branch by default
         ref: refs/pull/${{ github.event.pull_request.number }}/merge

.github/workflows/manual-nixos.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository_owner == 'NixOS'
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           # pull_request_target checks out the base branch by default
           ref: refs/pull/${{ github.event.pull_request.number }}/merge

.github/workflows/manual-nixpkgs.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository_owner == 'NixOS'
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           # pull_request_target checks out the base branch by default
           ref: refs/pull/${{ github.event.pull_request.number }}/merge

.github/workflows/nixos-manual.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository_owner == 'NixOS'
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         # pull_request_target checks out the base branch by default
         ref: refs/pull/${{ github.event.pull_request.number }}/merge

.github/workflows/periodic-merge-24h.yml

@@ -38,7 +38,7 @@ jobs:
             into: staging-21.11
     name: ${{ matrix.pairs.from }} → ${{ matrix.pairs.into }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: ${{ matrix.pairs.from }} → ${{ matrix.pairs.into }}
         uses: devmasx/merge-branch@1.4.0

.github/workflows/periodic-merge-6h.yml

@@ -32,7 +32,7 @@ jobs:
             into: staging
     name: ${{ matrix.pairs.from }} → ${{ matrix.pairs.into }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: ${{ matrix.pairs.from }} → ${{ matrix.pairs.into }}
         uses: devmasx/merge-branch@1.4.0

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

@@ -10,7 +10,7 @@ jobs:
     if: github.repository_owner == 'NixOS' && github.ref == 'refs/heads/master' # ensure workflow_dispatch only runs on master
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: cachix/install-nix-action@v16
       - name: setup
         id: setup