Update GHA actions (#190)

This should fix warning about deprecated Node.js 16.

.github/workflows/CI-CD.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Upload
-      uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # v3.1.2
+      uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3 # v4.3.1
       with:
         name: Event File
         path: ${{ github.event_path }}
@@ -28,12 +28,12 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       with:
         fetch-depth: '0'
 
     - name: Install .NET Core
-      uses: actions/setup-dotnet@607fce577a46308457984d59e4954e075820f10a # v3.0.3
+      uses: actions/setup-dotnet@4d6c8fcf3c8f7a60068d26b594648e99df24cee3 # v4.0.0
       with:
         dotnet-version: 6.0.x
 
@@ -45,7 +45,7 @@ jobs:
 
     - name: Upload Test Results
       if: always()
-      uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # v3.1.2
+      uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3 # v4.3.1
       with:
         name: Test Results (${{matrix.os}})
         path: "**/TestResults/*.xml"
@@ -54,7 +54,7 @@ jobs:
       run: dotnet pack --configuration Release --no-build --include-symbols source/icu.net.sln
 
     - name: Upload Artifacts
-      uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # v3.1.2
+      uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3 # v4.3.1
       with:
         name: icu-dotnet-nugetpackage
         path: |
@@ -69,7 +69,7 @@ jobs:
     if: github.event_name == 'push'
     steps:
     - name: Download Artifacts
-      uses: actions/download-artifact@9bc31d5ccc31df68ecc42ccf4149144866c47d8a # v3.0.2
+      uses: actions/download-artifact@c850b930e6ba138125429b7e5c93fc707a7f8427 # v4.1.4
       with:
         path: artifacts