fix: include hatch in CI job

.github/workflows/test.yml

@@ -15,19 +15,28 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
+      # Instantiate JVM v22.
       - name: Set up JDK 17
         uses: actions/setup-java@v4
         with:
-          java-version: '21'
+          java-version: '22'
           distribution: 'adopt'
           cache: 'gradle'
-      - name: Set up NPM
+      # Install hatch to support the Python runtime.
+      - name: Setup Hatch
+        uses: pypa/hatch@install
+      # Install npm in order to support TypeScript and the Node.js runtime.
+      - name: Setup NPM
         uses: actions/setup-node@v2
         with:
           node-version: '20'
+      # Create a JAR exposing the Orchestrator library to the individual 
+      # processors.
       - name: Create JAR
         run: ./gradlew shadowJar --console=plain --warning-mode all
+      # Attempt to execute the build step.
       - name: Build
         run: ./gradlew installDist --console=plain --warning-mode all
+      # Execute test suite.
       - name: Run tests
         run: ./gradlew test --console=plain --warning-mode all