chore: Downgrade Java version in pom.xml and GitHub Actions workflow to 17

- Updated the Maven compiler source and target versions in pom.xml from 21 to 17 to align with project requirements.
- Changed the Java version in the GitHub Actions workflow from 21 to 17 for consistency across build and deployment processes.
- These modifications ensure compatibility with the current project setup and maintain a stable development environment.

Author: Marvin Zhang

.github/workflows/publish.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Set up Java for publishing to GitHub Packages
         uses: actions/setup-java@v4
         with:
-          java-version: '21'
+          java-version: '17'
           distribution: 'temurin'
       - name: Get version
         id: get_version
@@ -45,7 +45,7 @@ jobs:
       - name: Set up Java for publishing to Maven Central
         uses: actions/setup-java@v4
         with:
-          java-version: '21'
+          java-version: '17'
           distribution: 'temurin'
           server-id: central
           server-username: MAVEN_USERNAME

pom.xml

@@ -31,8 +31,8 @@
     </scm>
 
     <properties>
-        <maven.compiler.source>21</maven.compiler.source>
-        <maven.compiler.target>21</maven.compiler.target>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
         <project.version>0.7.0</project.version>
     </properties>