ci: remove GITHUB_REF_NAME from GitHub action (#86)

Reviewed-on: https://git.montehaselino.de/DHBW/dhbw-abb-typst-template/pulls/86
Co-authored-by: servostar <sven.vogel123@web.de>
Co-committed-by: servostar <sven.vogel123@web.de>

.github/workflows/release.yml

@@ -55,7 +55,7 @@ jobs:
         run: echo ${{ steps.download.outputs.download-path }}
       - name: Prepare Release
         run: echo ${{ github.sha }} > Release.txt
-      - name: Release ${{ GITHUB_REF_NAME }}
+      - name: Release
         uses: softprops/action-gh-release@v2
         with:
           files: |