Add signing environment variables to release ci

Signed-off-by: Heiko Kiesel <heiko.kiesel@iteratec.com>

Author: Heiko Kiesel

.github/workflows/release.yml

@@ -22,15 +22,11 @@ jobs:
           java-version: 17
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
-      - name: Build with Gradle
-        run: ./gradlew sign
-        env:
-          DD_CLIENT_VERSION: ${{ github.event.release.tag_name }}
-          SIGNING_KEY: ${{ secrets.SIGNING_KEY }}
-          SIGNING_PASSWORD: ${{ secrets.SIGNING_PASSWORD }}
       - name: Publish to Maven Central
         env:
           MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}
           MAVEN_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}
+          SIGNING_KEY: ${{ secrets.SIGNING_KEY }}
+          SIGNING_PASSWORD: ${{ secrets.SIGNING_PASSWORD }}
           DD_CLIENT_VERSION: ${{ github.event.release.tag_name }}
         run: ./gradlew publish