(MODULES-11374) Update GitHub Action Ubuntu runner

GitHub is deprecating Ubuntu 18.04 runners on April 1, 2023. This
commit switches all Ubuntu 18.04 runners used in GitHub Actions to
Ubuntu 20.04.

https://github.blog/changelog/2022-08-09-github-actions-the-ubuntu-18-04-actions-runner-image-is-being-deprecated-and-will-be-removed-by-12-1-22/

This commit also updates all instances of the actions/checkout@v2
to actions/checkout@v3 in perparation for the former's deprecation
as part of the NodeJS deprecation.

https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/

Author: mhashizume

.github/workflows/auto_release.yml

@@ -28,7 +28,7 @@ jobs:
         echo STEP_START=$(date +%s) >> $GITHUB_ENV
     - name: "Checkout Source"
       if: ${{ github.repository_owner == 'puppetlabs' }}
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 0
         persist-credentials: false

.github/workflows/dispatch_unit_tests_with_nightly_puppet_gem.yaml

@@ -76,9 +76,9 @@ jobs:
 
     strategy:
       matrix:
-        os: [ 'ubuntu-18.04', 'macos-latest', 'windows-2019' ]
+        os: [ 'ubuntu-20.04', 'macos-latest', 'windows-2019' ]
         include:
-          - os: 'ubuntu-18.04'
+          - os: 'ubuntu-20.04'
             os_type: 'Linux'
             env_set_cmd: 'export '
             gem_file_postfix: '.gem'
@@ -94,7 +94,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install ruby version ${{ env.ruby_version }}
         uses: ruby/setup-ruby@v1

.github/workflows/release.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           ref: ${{ github.ref }}
           clean: true
@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           ref: ${{ github.ref }}
           clean: true

.github/workflows/static_code_analysis.yaml

@@ -15,10 +15,10 @@ jobs:
       ruby_version: 2.6
       extra_checks: check:symlinks check:git_ignore check:dot_underscore check:test_file
 
-    runs-on: 'ubuntu-18.04'
+    runs-on: 'ubuntu-20.04'
     steps:
       - name: Checkout current PR code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
 

.github/workflows/unit_tests_with_nightly_puppet_gem.yaml

@@ -12,15 +12,15 @@ jobs:
     name: ${{ matrix.os_type }} / Puppet${{ matrix.puppet_version }} gem / Ruby ${{ matrix.ruby }}
     strategy:
       matrix:
-        os: [ 'ubuntu-18.04', 'macos-latest', 'windows-2019' ]
+        os: [ 'ubuntu-20.04', 'macos-latest', 'windows-2019' ]
         puppet_version: [ 6, 7 ]
         include:
           - puppet_version: 6
             ruby: 2.5
           - puppet_version: 7
             ruby: 2.7
 
-          - os: 'ubuntu-18.04'
+          - os: 'ubuntu-20.04'
             os_type: 'Linux'
             env_set_cmd: 'export '
             gem_file: 'puppet-latest.gem'
@@ -36,7 +36,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current PR code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install ruby version ${{ matrix.ruby }}
         uses: ruby/setup-ruby@v1

.github/workflows/unit_tests_with_released_puppet_gem.yaml

@@ -12,15 +12,15 @@ jobs:
     name: ${{ matrix.os_type }} / Puppet${{ matrix.puppet_version }} gem / Ruby ${{ matrix.ruby }}
     strategy:
       matrix:
-        os: [ 'ubuntu-18.04', 'macos-latest', 'windows-2019' ]
+        os: [ 'ubuntu-20.04', 'macos-latest', 'windows-2019' ]
         puppet_version: [ 6, 7 ]
         include:
           - puppet_version: 6
             ruby: 2.5
           - puppet_version: 7
             ruby: 2.7
 
-          - os: 'ubuntu-18.04'
+          - os: 'ubuntu-20.04'
             os_type: 'Linux'
           - os: 'macos-latest'
             os_type: 'macOS'
@@ -32,7 +32,7 @@ jobs:
       PUPPET_GEM_VERSION: ~> ${{ matrix.puppet_version }}.0
     steps:
       - name: Checkout current PR code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install ruby version ${{ matrix.ruby }}
         uses: ruby/setup-ruby@v1