Update github checkout actions to v3. Update Vim version in MS-Windows. Add Vim 9.0 to the CI tests

.github/workflows/unittests.yml

@@ -8,13 +8,13 @@ jobs:
       matrix:
         vim:
           - nightly
+          - v9.0.0000
           - v8.2.0000
-          - v8.1.0000
           - v8.0.0000
           - v7.4
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Setup Vim
         uses: rhysd/action-setup-vim@v1
         id: vim
@@ -31,16 +31,16 @@ jobs:
     name: windows
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Download Vim
         shell: PowerShell
-        run: Invoke-WebRequest -Uri https://github.com/vim/vim-win32-installer/releases/download/v8.2.2488/gvim_8.2.2488_x64.zip -OutFile vim.zip
+        run: Invoke-WebRequest -Uri https://github.com/vim/vim-win32-installer/releases/download/v9.0.0769/gvim_9.0.0769_x64.zip -OutFile vim.zip
       - name: Extract vim
         shell: PowerShell
         run: Expand-Archive -Path vim.zip -DestinationPath $env:USERPROFILE
       - name: Run Tests
         run: |
-          $env:PATH = $env:PATH + ';' + $env:USERPROFILE + '\vim\vim82'
+          $env:PATH = $env:PATH + ';' + $env:USERPROFILE + '\vim\vim90'
           Get-ComputerInfo -Property Windows*
           vim --version
           cd test
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Setup Neovim
         uses: rhysd/action-setup-vim@v1
         id: vim