Update loopback-datasource-juggler to version 3.9.0 🚀

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Hello lovely humans,

loopback-datasource-juggler just published its new version 3.9.0.

State	Update 🚀
Dependency	loopback-datasource-juggler
New version	3.9.0
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 loopback-datasource-juggler.
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 456 commits (ahead by 456, behind by 72).

• b34b6e0 3.9.0
• 492b644 Merge pull request #1380 from strongloop/feature/fix-create-promise
• 5a0b027 Return promise for batch create
• 790ccc3 Merge pull request #1378 from strongloop/fix/use-correct-data-replaceCb
• 54f67dc Use correct data on replace callback
• 22428cd 3.8.0
• c41487a Merge pull request #1371 from strongloop/exclude_prop
• a4be613 3.7.0
• 21cd515 Merge pull request #1362 from strongloop/include-rework-cassandra
• ef08458 Remove unnecessary tests for adhocSort !== false
• aa3f5fa Fix the test case to avoid duplicate userId
• c07f460 Support include rework for C* connector
• 4f335cb Merge pull request #1301 from strongloop/fix/shortcut-polymorphic-json-definition
• cfd3cdf Overall review of polymorphic relations
• 45bf569 fix assert, make the test case more clear

There are 250 commits in total. See the full diff.