chore: bump sirv-cli version;

[lukeed]

The sirv-cli@2.x cycle changed its default from 5000 to 8080 because of macOS Monterey conflicts

• Closes Svelte default port conflict with ASP.NET Core default port. #181
• Closes localhost:5000 doesn't work after running npm run dev #184
• Closes Mac user issues: Unexpected token and site can't be reached #277