GH-110 - Enable Nullaway verification on CI.

.github/workflows/build.yaml

@@ -16,11 +16,11 @@ jobs:
     - name: Check out sources
       uses: actions/checkout@v4
 
-    - name: Set up JDK 17
+    - name: Set up JDK 23
       uses: actions/setup-java@v4
       with:
         distribution: 'temurin'
-        java-version: 17
+        java-version: 23
         cache: 'maven'
 
     - name: Build with Maven
@@ -30,4 +30,4 @@ jobs:
       env:
         ARTIFACTORY_USERNAME: ${{ secrets.ARTIFACTORY_USERNAME }}
         ARTIFACTORY_PASSWORD: ${{ secrets.ARTIFACTORY_PASSWORD }}
-      run: ./mvnw -B clean deploy -Pci,artifactory
+      run: ./mvnw -B clean deploy -Pci,artifactory,nullaway