Updated workflow dependencies

- Bump dotnet-version to 8.x to match expected SDK
- Update JDK to Microsoft OpenJDK 21

.github/workflows/build.yml

@@ -1,4 +1,4 @@
-name: Pull request checks 
+name: Pull request checks
 
 on:
   push:
@@ -14,50 +14,62 @@ on:
     - '!Dfe.PrepareConversions/Dfe.PrepareConversions.CypressTests/**'
 
 env:
-  JAVA_VERSION: '17'
+  JAVA_VERSION: '21'
+  DOTNET_VERSION: '8.0.x'
 
 jobs:
   lint:
+    name: Lint Cypress
     runs-on: ubuntu-latest
-    steps:     
+    steps:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0 # Shallow clones disabled for a better relevancy of SC analysis
-    - name: lint cypress tests    
+
+    - name: lint cypress tests
       run: |
         cd Dfe.PrepareConversions/Dfe.PrepareConversions.CypressTests
         npm ci
         npm run lint
 
   build:
+    name: Build .NET, Test and Analyse
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0 # Shallow clones disabled for a better relevancy of SC analysis
+
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 6.0.403
-    - name: Set up JDK 11
+        dotnet-version: ${{ env.DOTNET_VERSION }}
+
+    - name: Set up JDK ${{ env.JAVA_VERSION }}
       uses: actions/setup-java@v4
       with:
         java-version: ${{ env.JAVA_VERSION }}
         distribution: 'microsoft'
+
     - name: Cache SonarCloud packages
       uses: actions/cache@v4
       with:
         path: ~\sonar\cache
         key: ${{ runner.os }}-sonar
         restore-keys: ${{ runner.os }}-sonar
+
     - name: Install SonarCloud scanners
       run: dotnet tool install --global dotnet-sonarscanner
+
     - name: Install dotnet reportgenerator
       run: dotnet tool install --global dotnet-reportgenerator-globaltool
+
     - name: Add nuget package source
       run: dotnet nuget add source --username USERNAME --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/DFE-Digital/index.json"
+
     - name: Restore dependencies
       run: dotnet restore Dfe.PrepareConversions/Dfe.PrepareConversions.sln
+
     - name: Build, Test and Analyze
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}