Migrate setup-java action to use Temurin

AdoptOpenJDK has moved to the Eclipse Foundation and now distributes binaries under the new name "Eclipse Temurin"

druid-demo-petclinic/.github/workflows/maven-build.yml

@@ -23,7 +23,7 @@ jobs:
         uses: actions/setup-java@v2
         with:
           java-version: ${{matrix.java}}
-          distribution: 'adopt'
+          distribution: 'temurin'
           cache: maven
       - name: Build with Maven Wrapper
         run: ./mvnw -B package