Add setup-dotnet action to GitHub workflows

Author: andyleejordan

.github/workflows/codeql-analysis.yml

@@ -29,6 +29,9 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v3
 
+    - name: Install dotnet
+      uses: actions/setup-dotnet@v3
+
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v2

.github/workflows/emacs-test.yml

@@ -17,6 +17,9 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
 
+      - name: Install dotnet
+        uses: actions/setup-dotnet@v3
+
       - name: Build PSES
         shell: pwsh
         run: tools/azurePipelinesBuild.ps1

.github/workflows/vim-test.yml

@@ -17,6 +17,9 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
 
+      - name: Install dotnet
+        uses: actions/setup-dotnet@v3
+
       - name: Build PSES
         shell: pwsh
         run: tools/azurePipelinesBuild.ps1