Bump log4js from 6.1.0 to 6.1.2

[dependabot-preview[bot]]

Bumps log4js from 6.1.0 to 6.1.2.

Changelog

Sourced from log4js's changelog.

6.1.2

• Handle out-of-order appender loading - thanks @mvastola

6.1.1

• Add guards for undefined shutdown callback - thanks @aaron-edwards
• Ignore .bob files - thanks @cesine
• Add mark method to type definitions - thanks @techmunk

Commits

• 04f8fa3 6.1.2
• 3668086 Merge pull request #986 from mvastola/fix-appender-load-order
• 5aec282 fix: Allow appenders to depend on not-yet-loaded appenders.
• d37678f 6.1.1
• 9dab33f chore: updated changelog for 6.1.1
• cb6d8b0 Merge pull request #972 from aaron-edwards/master
• 7366f5b Merge pull request #975 from cesine/patch-1
• c34dce4 Merge pull request #984 from techmunk/master
• bb841d3 fix(types): mark log level method in Logger class declaration.
• 150b1f7 Replace slack link with one that does not expire
• Additional commits viewable in compare view

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[dependabot-preview[bot]]

Superseded by #198.