deleted yet another use of github.ref

.github/workflows/build.yml

@@ -47,7 +47,7 @@ jobs:
         run: |
           git archive --prefix="cryptomator-${{ github.ref_name }}/" -o "cryptomator-${{ github.ref_name }}.tar.gz" ${{ github.ref }}
           echo "${GPG_PRIVATE_KEY}" | gpg --batch --quiet --import
-          echo "${GPG_PASSPHRASE}" | gpg --batch --quiet --passphrase-fd 0 --pinentry-mode loopback -u 615D449FE6E6A235 --detach-sign -a "cryptomator-${{ github.ref }}.tar.gz"
+          echo "${GPG_PASSPHRASE}" | gpg --batch --quiet --passphrase-fd 0 --pinentry-mode loopback -u 615D449FE6E6A235 --detach-sign -a cryptomator-*.tar.gz
         env:
           GPG_PRIVATE_KEY: ${{ secrets.RELEASES_GPG_PRIVATE_KEY }}
           GPG_PASSPHRASE: ${{ secrets.RELEASES_GPG_PASSPHRASE }}