Bump xmlunit-matchers from 2.6.2 to 2.6.3

[dependabot-preview]

Bumps xmlunit-matchers from 2.6.2 to 2.6.3.

Release notes

Sourced from xmlunit-matchers's releases.

XMLUnit 2.6.3

The release fixes a bug in a corner-case and adds a new isNumber placeholder.

The full list of changes:

• add a new ${xmlunit.isNumber} placeholder
  Issue #153 via PR #154 by @​NathanAtClarity.

• the XPath values of a comparison should not be affected by any NodeFilter being in effect.
  Issue #156

Changelog

Sourced from xmlunit-matchers's changelog.

XMLUnit for Java 2.6.3 - /Released 2019-06-21/

• add a new ${xmlunit.isNumber} placeholder
  Issue #153 via PR
  #154 by
  @​NathanAtClarity.

• the XPath values of a comparison should not be affected by any
  NodeFilter being in effect.
  Issue #156

Commits

• b7a9e84 fix versions for 2.6.3 release
• 51976d8 let's try to use an explicit matrix with Linux distros set
• f7c0686 added missing @​since to number placeholder
• 6706388 whitespace
• 8e94e6e XPath shouldn't be affected by NodeFilter
• 3cf072e testcase for #156
• b051968 add a test for https://sourceforge.net/p/xmlunit/discussion/73273/thread/92c9...
• 55a5142 record #153/#154 , thanks to @​NathanAtClarity
• aaa7277 Merge pull request #154 from ClaritySoftwareSolutions/add-IsNumber-placeholder
• e3e245a Addition of isNumber placeholder
• Additional commits viewable in compare view

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