Update softprops/action-gh-release action to v2

Author: renovate[bot]

.github/workflows/release.yml

@@ -30,7 +30,7 @@ jobs:
         run: sha256sum container-manager > SHASUM256.txt
 
       - name: Release
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v2
         if: startsWith(github.ref, 'refs/tags/')
         with:
           files: |