upgrade htmlnano dep

[devmao]

↪️ Pull Request

See issue #2505

💻 Examples

🚨 Test instructions

✔️ PR Todo

• Added/updated unit tests for this change
• Filled out test instructions (In case there aren't any unit tests)
• Included links to related issues/PRs

[ai]

This htmlnano update is pretty important, because:

1. Old cssnano (in htmlnano) brings old PostCSS and create conflicts like parcel build fails with "semantic.min.css:undefined:undefined: decl.moveTo is not a function" #2505
2. Old cssnano brings old Browserslist which will throw error on unknown queries from browerslist config.

Also, these old dependencies print warnings in Yarn:

warning parcel-bundler > htmlnano > cssnano > autoprefixer > browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.
warning parcel-bundler > htmlnano > cssnano > postcss-merge-rules > browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.
warning parcel-bundler > htmlnano > cssnano > postcss-merge-rules > caniuse-api > browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.

These warnings are bad in contrast with awesome DX of Parcel.

[ai]

:D Oops, I left the comment just a few second after PR was merged. Good work @devongovett 👍. Sorry for the noise.

[mischnic]

These two test are now failing:

parcel/packages/core/integration-tests/test/html.js

Lines 282 to 293 in 08398bd

	it('should minify HTML in production mode', async function() {
	await bundle(path.join(__dirname, '/integration/htmlnano/index.html'), {
	production: true
	});
	let html = await fs.readFile(
	path.join(__dirname, '/dist/index.html'),
	'utf8'
	);
	assert(html.includes('Other page'));
	assert(!html.includes('\n'));
	});

parcel/packages/core/integration-tests/test/html.js

Lines 328 to 342 in 08398bd

	it('should not minify default values inside HTML in production mode', async function() {
	await bundle(
	path.join(__dirname, '/integration/htmlnano-defaults-form/index.html'),
	{
	production: true
	}
	);
	let html = await fs.readFile(
	path.join(__dirname, '/dist/index.html'),
	'utf8'
	);
	assert(html.includes('<input type="text">'));
	assert(!html.includes('\n'));
	});