Upgrade to Gradle 8.9

- Remove dual JDK install steps in GitHub Action Workflow to account for gradle 8.9 supporting Java 22

.github/workflows/build.yml

@@ -15,20 +15,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      # Used by gradle toolchain to actually build
       - name: Set up JDK 22
         uses: actions/setup-java@v4
         with:
           java-version: '22'
           distribution: 'temurin'
-
-      # Because gradle 8.7 only supports Java 21, run the build with 21 and
-      # use the 22 version as a toolchain
-      - name: Set up JDK 21
-        uses: actions/setup-java@v4
-        with:
-          java-version: '21'
-          distribution: 'temurin'
           cache: 'gradle'
 
       - name: Build

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists