Bump importlib-metadata from 8.2.0 to 8.4.0 in /back-end

[dependabot[bot]]

Bumps importlib-metadata from 8.2.0 to 8.4.0.

Changelog

Sourced from importlib-metadata's changelog.

v8.4.0

Features

• Deferred import of inspect for import performance. (#499)

v8.3.0

Features

• Disallow passing of 'dist' to EntryPoints.select.

Commits

• 1616cb3 Finalize
• 71b4678 Add news fragment.
• ebcdcfd Remove workaround for python/typeshed#10328.
• 2c43cfe Merge pull request #499 from danielhollas/defer-inspect
• a7aaf72 Use third-person imperative voice and link to issue in comment.
• e99c105 Restore single-expression logic.
• debb516 Don't use global var
• 3c8e1ec Finalize
• 5035755 Merge pull request #498 from python/feature/entry-points-disallow-dist-match
• 6d9b766 Remove MetadataPathFinder regardless of its position.
• Additional commits viewable in compare view

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