Bump sopel-modules-github from 0.4.6 to 0.4.7 in /modules/sopel/files (#397)

Bumps sopel-modules-github from 0.4.6 to 0.4.7.

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updated-dependencies:

• dependency-name: sopel-modules-github dependency-type: direct:development update-type: version-update:semver-patch

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