build(ci): Add es6 bundle to size-limit

[AbhiPrasad]

This will help better justify decisions between es5 and es6 going forward

Atm there is a 10% decrease when going from es5 -> es6.

[lobsterkatie]

I'll admit I'm confused. Shouldn't @sentry/browser - Webpack (gzipped) and @sentry/browser - Webpack (minified) be looking at different files? And shouldn't the two ES6 ones also be looking at different files?

[github-actions]

size-limit report

Path	Base Size (448244b)	Current Size	Change
@sentry/browser - CDN Bundle (gzipped)	19.69 KB	0 B	removed
@sentry/browser - CDN Bundle (minified)	62.91 KB	0 B	removed
@sentry/browser - Webpack	22.21 KB	0 B	removed
@sentry/browser - Webpack - gzip = false	76.02 KB	0 B	removed
@sentry/react - Webpack	22.24 KB	0 B	removed
@sentry/nextjs Client - Webpack	46.31 KB	0 B	removed
@sentry/browser + @sentry/tracing - CDN Bundle (gzipped)	28.22 KB	0 B	removed
@sentry/browser - ES5 CDN Bundle (gzipped + minified)	0 B	19.69 KB	added
@sentry/browser - ES5 CDN Bundle (minified)	0 B	62.91 KB	added
@sentry/browser - ES6 CDN Bundle (gzipped + minified)	0 B	18.51 KB	added
@sentry/browser - ES6 CDN Bundle (minified)	0 B	56.8 KB	added
@sentry/browser - Webpack (gzipped + minified)	0 B	22.21 KB	added
@sentry/browser - Webpack (minified)	0 B	76.02 KB	added
@sentry/react - Webpack (gzipped + minified)	0 B	22.24 KB	added
@sentry/nextjs Client - Webpack (gzipped + minified)	0 B	46.31 KB	added
@sentry/browser + @sentry/tracing - ES5 CDN Bundle (gzipped + minified)	0 B	28.23 KB	added

[AbhiPrasad]

One is gzipped + minified and the other is just minified. You can see the value of the gzip option passed in to see. Both gzip and non-gzip will still point to the same file. I can update them to better represent that.

[lobsterkatie]

Ah, got it. Thanks, that's definitely clearer!

Two other suggestions, up to you if you want to do them:

1. Label the ES5 CDN bundle the same way we label the ES6 one.
2. Move the ES6 CDN bundle to be up with the ES5 ones, for easier comparison.

Regardless, this is a good addition!