Bump actions/checkout from 2.4.0 to 3.0.0 (#221)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.4.0 to 3.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2.4.0...v3.0.0)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/backup.yaml

@@ -10,7 +10,7 @@ jobs:
   BackupGit:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v3.0.0
       - name: backup
         uses: jenkins-zh/git-backup-actions@v0.0.4
         env:

.github/workflows/coverage-report.yaml

@@ -13,7 +13,7 @@ jobs:
         uses: actions/setup-go@v3
         with:
           go-version: 1.16.x
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v3.0.0
       - name: Test
         run: |
           go test ./... -coverprofile coverage.out

.github/workflows/pull-request.yaml

@@ -16,7 +16,7 @@ jobs:
           go-version: 1.16
         id: go
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v3.0.0
       - name: Upgrade upx
         run: |
           # try to fix https://github.com/jenkins-zh/jenkins-cli/issues/493
@@ -58,7 +58,7 @@ jobs:
           go-version: 1.16
         id: go
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v3.0.0
       - name: Go-linter-1
         uses: Jerome1337/golint-action@v1.0.2
         with:
@@ -70,7 +70,7 @@ jobs:
       GO111MODULE: on
     steps:
       - name: Checkout Source
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v3.0.0
       - name: Run Gosec Security Scanner
         uses: securego/gosec@master
         with:
@@ -82,7 +82,7 @@ jobs:
       GO111MODULE: on
     steps:
       - name: Checkout Source
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v3.0.0
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v1
         with:
@@ -93,7 +93,7 @@ jobs:
     name: MarkdownLinkCheck
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v3.0.0
       - uses: gaurav-nelson/github-action-markdown-link-check@1.0.13
         with:
           use-verbose-mode: 'yes'

.github/workflows/release.yaml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v3.0.0
       - name: Unshallow
         run: git fetch --prune --unshallow
       - name: Set up Go
@@ -44,7 +44,7 @@ jobs:
     runs-on: windows-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v3.0.0
       - name: Download hd.exe
         id: download_exe
         shell: bash