chore: upgrade build-and-test workflow to test Java 17 and 21 (#321)

# Description
- Added matrix strategy to test against multiple Java versions (17, 21)
- Dynamically sets JDK version in workflow steps using matrix variable
- Ensures compatibility across different Java environments
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Fixes #313  🦕

Author: Asymtode712

.github/workflows/build-and-test.yml

@@ -14,12 +14,15 @@ concurrency:
 jobs:
   build:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java-version: ['17', '21']
     steps:
     - uses: actions/checkout@v4
-    - name: Set up JDK 17
+    - name: Set up JDK ${{ matrix.java-version }}
       uses: actions/setup-java@v4
       with:
-        java-version: '17'
+        java-version: ${{ matrix.java-version }}
         distribution: 'temurin'
         cache: maven
     - name: Build with Maven and run tests