Bump xmlbuilder from 13.0.2 to 15.1.1

[dependabot-preview[bot]]

Bumps xmlbuilder from 13.0.2 to 15.1.1.

Changelog

Sourced from xmlbuilder's changelog.

[15.1.1] - 2020-04-09

• Fixed a bug where the noDoubleEncoding flag kept named entities other than those specified in the spec (see #16 in xmlbuilder2).

[15.1.0] - 2020-03-20

• Added the invalidCharReplacement option to replace invalid characters with a user supplied replacement character. See #147.

[15.0.1] - 2020-03-10

• Pretty printing now keeps single CDATA nodes in-line with their parent elements also with the stream writer.

[15.0.0] - 2020-03-10

• Pretty printing now keeps single CDATA nodes in-line with their parent elements. See #224.

[14.0.0] - 2020-02-14

• Removed support for node.js 6.0. Minimum required version is now 8.0.

Commits

• 8e669d6 15.1.1
• 98c30aa Update change log
• b2b8b36 Backport noDoubleEncoding fix from xmlbuilder2.
• d87b597 Test invalidCharReplacement function usage
• a99ae0a Update change log
• 979a999 15.1.0
• 0431ea1 Add invalidCharReplacement option. Fixes #147
• 32b1347 Update dependencies
• bcdc6d3 Update change log
• 443c039 15.0.1
• Additional commits viewable in compare view

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