Update Github actions (#590)

Author: Regenhardt

.github/workflows/main.yml

@@ -89,14 +89,12 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Install .NET
-        uses: actions/setup-dotnet@607fce577a46308457984d59e4954e075820f10a # v3.0.3
+        uses: actions/setup-dotnet@3951f0dfe7a07e2313ec93c75700083e2005cbab # v4.3.0
         with:
-          dotnet-version: |
-            6.0.x
-            8.0.x
+          dotnet-version: '8.0.x'
 
       - name: Run restore
         run: dotnet restore
@@ -128,14 +126,12 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Install .NET
-        uses: actions/setup-dotnet@607fce577a46308457984d59e4954e075820f10a # v3.0.3
+        uses: actions/setup-dotnet@3951f0dfe7a07e2313ec93c75700083e2005cbab # v4.3.0
         with:
-          dotnet-version: |
-            6.0.x
-            8.0.x
+          dotnet-version: '8.0.x'
 
       - name: Run restore
         run: dotnet restore
@@ -158,7 +154,7 @@ jobs:
           --configuration Release
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@a8a3f3ad30e3422c9c7b888a15615d19a852ae32 # v3.1.3
+        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
         with:
           name: packages
           path: "**/*.nupkg"
@@ -179,16 +175,14 @@ jobs:
 
     steps:
       - name: Download artifacts
-        uses: actions/download-artifact@9bc31d5ccc31df68ecc42ccf4149144866c47d8a # v3.0.2
+        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
         with:
           name: packages
 
       - name: Install .NET
-        uses: actions/setup-dotnet@607fce577a46308457984d59e4954e075820f10a # v3.0.3
+        uses: actions/setup-dotnet@3951f0dfe7a07e2313ec93c75700083e2005cbab # v4.3.0
         with:
-          dotnet-version: |
-            6.0.x
-            8.0.x
+          dotnet-version: '8.0.x'
 
       # Publish to GitHub package registry every time, whether it's a prerelease
       # version or a stable release version.