update github actions

Author: arturcic

.github/workflows/ci.yml

@@ -15,17 +15,17 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
       - name: Install .NET SDK
-        uses: actions/setup-dotnet@v1.8.1
+        uses: actions/setup-dotnet@v3
         with:
           dotnet-version: 6.0.x
       - name: Build
         run: dotnet build LibGit2Sharp.sln --configuration Release
       - name: Upload packages
-        uses: actions/upload-artifact@v2.2.4
+        uses: actions/upload-artifact@v3
         with:
           name: NuGet packages
           path: bin/Packages/
@@ -44,11 +44,11 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
       - name: Install .NET SDK
-        uses: actions/setup-dotnet@v1.8.1
+        uses: actions/setup-dotnet@v3
         with:
           dotnet-version: 6.0.x
       - name: Install .NET Core 3.1 runtime
@@ -86,7 +86,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v3
         with:
           fetch-depth: 0
       - name: Setup QEMU