Update softprops/action-gh-release action to v2.0.8

Author: renovate[bot]

.github/workflows/slsa.yml

@@ -65,7 +65,7 @@ jobs:
           name: ${{ env.REPOSITORY_NAME }}.sha256
 
       - name: Upload asset
-        uses: softprops/action-gh-release@fb2d03176f42a1f0dd433ca263f314051d3edd44 # v2.0.7
+        uses: softprops/action-gh-release@c062e08bd532815e2082a85e87e3ef29c3e6d191 # v2.0.8
         with:
           files: |
             ${{ env.REPOSITORY_NAME }}.sha256