Update handlebars to version 4.0.9 🚀

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Hello lovely humans,

handlebars just published its new version 4.0.9.

State	Update 🚀
Dependency	handlebars
New version	4.0.9
Type	dependency

This version is not covered by your current version range.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of handlebars.
Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.

Do you have any ideas how I could improve these pull requests? Did I report anything you think isn’t right?
Are you unsure about how things are supposed to work?

There is a collection of frequently asked questions and while I’m just a bot, there is a group of people who are happy to teach me new things. Let them know.

Good luck with your project ✨

You rock!

🌴

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The new version differs by 45 commits .

• 5ec78a8 v4.0.9
• 5333f31 Update release notes
• 8a836e2 Handlebars.compile() does not modify "options" anymore
• cc554a5 Fix build in windows
• ed879a6 Ensure LF line-edings in handlebars-template fixtures (*.hbs)
• 2e21e2b Run integration test with node handlebars -a ... on Windows
• bdfdbea Ensure LF line-edings in lexer-files (*.l)
• b50ef03 Force LF line-endings for spec/artifacts
• 6e6269f Use istanbul/lib/cli.js instead of node_modules/.bin/istanbul
• 7378f85 Publish valid semver task independently of the branch
• fed5818 v4.0.8
• 0e81f0a Update release notes
• a00c598 Allow partial-blocks to be executed without "options"
• 606fa55 v4.0.7
• 8e09f0e Update release-notes for 4.0.7

There are 45 commits in total. See the full diff.