Bump softprops/action-gh-release action to v2 (#652)

as v1 uses Node 16 which is being deprecated in a few months

.github/workflows/release.yml

@@ -100,7 +100,7 @@ jobs:
           sha512sum Northstar.release.${{ env.NORTHSTAR_VERSION }}.zip >> $GITHUB_STEP_SUMMARY
           echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
       - name: Upload zip to release draft
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v2
         if: startsWith(github.ref, 'refs/tags/v') && !contains(env.NORTHSTAR_VERSION, '-rc')
         with:
           draft: true