release: Add _upload_libseccomp_tarball()

As the name of the function says, it's responsible for uploading the
libseccomp source tarballs as par of our release process.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

.github/workflows/release.yaml

@@ -145,21 +145,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: download-and-upload-tarball
-        env:
-          GITHUB_TOKEN: ${{ secrets.GIT_UPLOAD_TOKEN }}
-          GOPATH: ${HOME}/go
         run: |
-          pushd $GITHUB_WORKSPACE
-          ./ci/install_yq.sh
-          tag=$(echo $GITHUB_REF | cut -d/ -f3-)
-          versions_yaml="versions.yaml"
-          version=$(${GOPATH}/bin/yq read ${versions_yaml} "externals.libseccomp.version")
-          repo_url=$(${GOPATH}/bin/yq read ${versions_yaml} "externals.libseccomp.url")
-          download_url="${repo_url}/releases/download/v${version}"
-          tarball="libseccomp-${version}.tar.gz"
-          asc="${tarball}.asc"
-          curl -sSLO "${download_url}/${tarball}"
-          curl -sSLO "${download_url}/${asc}"
-          gh release upload "${tag}" "${tarball}"
-          gh release upload "${tag}" "${asc}"
-          popd
+          ./tools/packaging/release/release.sh upload-libseccomp-tarball
+        env:
+          GH_TOKEN: ${{ github.token }}