Set new minimum baseline:

- Java 17
- Spring 6

Next release will be 2.0.0.

Author: Chessray

.github/workflows/gradle.yml

@@ -18,11 +18,11 @@ jobs:
 
     steps:
     - uses: actions/checkout@v5
-    - name: Set up JDK 11
+    - name: Set up JDK 17
       uses: actions/setup-java@v5
       with:
         distribution: 'zulu'
-        java-version: 11
+        java-version: 17
     - name: Build with Gradle
       uses: gradle/gradle-build-action@v3
       with: