Add preview of files to notifications · nextcloud/talk-ios@76fe664

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

Cyclomatic Complexity Violation: Function should have complexity 10 or less; currently complexity is 11 (cyclomatic_complexity)

Cyclomatic Complexity Violation: Function should have complexity 10 or less; currently complexity is 19 (cyclomatic_complexity)

Empty Count Violation: Prefer checking `isEmpty` over comparing `count` to zero (empty_count)

Cyclomatic Complexity Violation: Function should have complexity 10 or less; currently complexity is 12 (cyclomatic_complexity)

Cyclomatic Complexity Violation: Function should have complexity 10 or less; currently complexity is 18 (cyclomatic_complexity)

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