Bump actions/checkout from 2 to 3.1.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.1.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v3.1.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/check_docs.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3.1.0
     - name: Check links in docs
       uses: gaurav-nelson/github-action-markdown-link-check@v1
       # checks all markdown files from /docs including all subfolders

.github/workflows/depcheck.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3.1.0
 
     - name: Invoke action
       uses: rfratto/depcheck@main

.github/workflows/publish.yml

@@ -11,7 +11,7 @@ jobs:
   sync:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v3.1.0
     - run: git clone --single-branch --no-tags --depth 1 -b master https://grafanabot:${{ secrets.GH_BOT_ACCESS_TOKEN }}@github.com/grafana/website-sync ./.github/actions/website-sync
     - name: publish-to-git
       uses: ./.github/actions/website-sync

.github/workflows/scripts.yml

@@ -5,7 +5,7 @@ jobs:
     name: Shellcheck
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
     - uses: azohra/shell-linter@latest
       with:
         path: "packaging,production"

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
         go-version: 1.17.6
       id: go
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3.1.0
     - name: Report memory
       shell: powershell
       run: |