ci: fix set-output usage

Author: mbhall88

.github/workflows/release.yaml

@@ -99,7 +99,7 @@ jobs:
           PKG_suffix=".tar.gz" ; case ${{ matrix.job.target }} in *-pc-windows-*) PKG_suffix=".zip" ;; esac;
           PKG_BASENAME=${PROJECT_NAME}-${PROJECT_VERSION}-${{ matrix.job.target }}
           PKG_NAME=${PKG_BASENAME}${PKG_suffix}
-          echo ::set-output name=PKG_NAME::${PKG_NAME}
+          echo "PKG_NAME=${PKG_NAME}" >> $GITHUB_OUTPUT
           PKG_STAGING="${{ env.CICD_INTERMEDIATES_DIR }}/package"
           ARCHIVE_DIR="${PKG_STAGING}/${PKG_BASENAME}/"
           mkdir -p "${ARCHIVE_DIR}"