Reverse to using environment variables again

Author: ben221199

.github/workflows/maven-publish.yml

@@ -22,10 +22,13 @@ jobs:
           distribution: 'temurin'
           gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }}
           server-id: central
-          server-username: ${{ secrets.MAVEN_CENTRAL_USERNAME }}
-          server-password: ${{ secrets.MAVEN_CENTRAL_TOKEN }}
+          server-username: MAVEN_USERNAME
+          server-password: MAVEN_PASSWORD
       - name: Publish to the Maven Central Repository
         run: mvn -P central --batch-mode deploy
+        env:
+          MAVEN_USERNAME: ${{ secrets.MAVEN_CENTRAL_USERNAME }}
+          MAVEN_PASSWORD: ${{ secrets.MAVEN_CENTRAL_TOKEN }}
       - name: Set up Java for publishing to GitHub Packages
         uses: actions/setup-java@v4
         with: