Add missing env variables in release action

Author: piotrrzysko

.github/workflows/release.yml

@@ -40,6 +40,10 @@ jobs:
       - name: Prepare Release
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+          MAVEN_GPG_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
+          MAVEN_USER: ${{ secrets.MAVEN_USER }}
+          MAVEN_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}
         run: |
           MVN_ARGS=""
           if [ -n "${{ github.event.inputs.releaseVersion }}" ]; then