Install .NET SDK 5.0.403 as part of GitHub Actions workflow

.github/workflows/ci.yaml

@@ -37,7 +37,12 @@ jobs:
         run: git fetch --tags
         shell: bash
 
-      - name: Setup dotnet
+      - name: Setup dotnet 5.0
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 5.0.403
+
+      - name: Setup dotnet 6.0
         uses: actions/setup-dotnet@v1
         with:
           dotnet-version: 6.0.100

.github/workflows/publish.yaml

@@ -43,7 +43,12 @@ jobs:
         run: git fetch --tags
         shell: bash
 
-      - name: Setup dotnet
+      - name: Setup dotnet 5.0
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 5.0.403
+
+      - name: Setup dotnet 6.0
         uses: actions/setup-dotnet@v1
         with:
           dotnet-version: 6.0.100
@@ -73,7 +78,12 @@ jobs:
         run: git fetch --tags
         shell: bash
 
-      - name: Setup dotnet
+      - name: Setup dotnet 5.0
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 5.0.403
+
+      - name: Setup dotnet 6.0
         uses: actions/setup-dotnet@v1
         with:
           dotnet-version: 6.0.100