Bump sequelize from 4.42.0 to 5.15.1 in /example

[dependabot[bot]]

Bumps sequelize from 4.42.0 to 5.15.1.

Release notes

Sourced from sequelize's releases.

v5.15.1

5.15.1 (2019-08-18)

Security

• sequelize.json.fn: use common path extraction for mysql/mariadb/sqlite (#11329) (9bd0bc1)

This fixes a security issue with sequelize.json() for MySQL. Old code was still used for formatting sub paths for json queries when used with sequelize.json() helper function

Example of attack vector

return User.findAll({
  where: sequelize.json("data.id')) AS DECIMAL) = 1 DELETE YOLO INJECTIONS; -- ", 1)
});

Thanks to @​Kirill89 from Snyk Security Research Team for reporting this issue.

v5.15.0

5.15.0 (2019-08-14)

Features

• associations: source and target key support for belongs-to-many (#11311) (83e263b)

v5.14.0

5.14.0 (2019-08-13)

Features

• support include option in bulkInsert (#11307) (4f09899)

v5.13.1

5.13.1 (2019-08-11)

Bug Fixes

• count: fix null count with includes (#11295) (592099d)

v5.13.0

5.13.0 (2019-08-09)

Bug Fixes

... (truncated)

Commits

• 9bd0bc1 fix(sequelize.json.fn): use common path extraction for mysql/mariadb/sqlite (...
• 83e263b feat(associations): source and target key support for belongs-to-many (#11311)
• 4f09899 feat: support include option in bulkInsert (#11307)
• de06ac3 docs(security): grammar mistakes
• 29eb1c8 docs(security): add responsible disclosure policy (#11300)
• 592099d fix(count): fix null count with includes (#11295)
• 80d3625 docs(query-interface): fix typo with remove-column parameter (#11294)
• a39c63a fix(types): return a usable type when using the sequelize.models lookup (#11293)
• 98a4089 fix(types): use correct this value in getterMethods and setterMethods (#11292)
• dd428a0 refactor(association): name model that association is missing from (#11290)
• Additional commits viewable in compare view

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