Don't run Gradle 9 on Java 11

Author: Goooler

.github/workflows/changelog-print.yml

@@ -10,10 +10,9 @@ jobs:
     name: changelogPrint
     steps:
       - uses: actions/checkout@v4
-      - name: jdk 11
-        uses: actions/setup-java@v4
+      - uses: actions/setup-java@v4
         with:
-          java-version: 11
+          java-version: 21
           distribution: 'temurin'
       - name: gradle caching
         uses: gradle/actions/setup-gradle@v4

.github/workflows/ci.yml

@@ -23,11 +23,10 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - name: Install JDK 11
-        uses: actions/setup-java@v4
+      - uses: actions/setup-java@v4
         with:
           distribution: "temurin"
-          java-version: 11
+          java-version: 21
       - name: gradle caching
         uses: gradle/actions/setup-gradle@v4
       - name: spotlessCheck
@@ -62,6 +61,10 @@ jobs:
           - kind: idea
             jre: 11
             os: ubuntu-latest
+        exclude:
+          # Gradle 9 supports Java 17 or above.
+          - kind: gradle
+            jre: 11
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout

.github/workflows/deploy.yml

@@ -38,10 +38,9 @@ jobs:
       ORG_GRADLE_PROJECT_gpg_key64: ${{ secrets.GPG_KEY64 }}
     steps:
       - uses: actions/checkout@v4
-      - name: jdk 11
-        uses: actions/setup-java@v4
+      - uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           distribution: 'temurin'
       - name: gradle caching
         uses: gradle/actions/setup-gradle@v4